diff --git a/WorkflowEngine.php b/WorkflowEngine.php
index 30f25d0..bfeebda 100644
--- a/WorkflowEngine.php
+++ b/WorkflowEngine.php
@@ -791,10 +791,10 @@ class WorkflowEngine {
         return $attendance;
     }
 
-    public function updateMeetingAttendance(int $meetingId, int $personId, string $status, int $userId, ?string $guestSurvey = null): void {
-        $sql = "INSERT INTO meeting_attendance (meeting_id, person_id, attendance_status, guest_survey, updated_by) VALUES (?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE attendance_status = VALUES(attendance_status), guest_survey = VALUES(guest_survey), updated_by = VALUES(updated_by)";
+    public function updateMeetingAttendance(int $meetingId, int $personId, int $bniGroupId, string $status, int $userId, ?string $guestSurvey = null): void {
+        $sql = "INSERT INTO meeting_attendance (meeting_id, person_id, bni_group_id, attendance_status, guest_survey, updated_by) VALUES (?, ?, ?, ?, ?, ?) ON DUPLICATE KEY UPDATE attendance_status = VALUES(attendance_status), guest_survey = VALUES(guest_survey), updated_by = VALUES(updated_by), bni_group_id = VALUES(bni_group_id)";
         $stmt = $this->pdo->prepare($sql);
-        $stmt->execute([$meetingId, $personId, $status, $guestSurvey, $userId]);
+        $stmt->execute([$meetingId, $personId, $bniGroupId, $status, $guestSurvey, $userId]);
     }
 
     public function getMeetingAttendanceByGroupAndDate(int $groupId, string $meetingDatetime): array {
diff --git a/_update_meeting_attendance.php b/_update_meeting_attendance.php
index 2e4dedf..de787bf 100644
--- a/_update_meeting_attendance.php
+++ b/_update_meeting_attendance.php
@@ -35,7 +35,7 @@ if (!$personId || !$groupId || !$meetingDate || !$status) {
 try {
     $workflowEngine = new WorkflowEngine();
     $meetingId = $workflowEngine->getOrCreateMeeting((int)$groupId, $meetingDate);
-    $workflowEngine->updateMeetingAttendance($meetingId, (int)$personId, $status, (int)$userId, $guestSurvey);
+    $workflowEngine->updateMeetingAttendance($meetingId, (int)$personId, (int)$groupId, $status, (int)$userId, $guestSurvey);
 
     $response['success'] = true;
     $response['message'] = 'Attendance updated successfully.';
diff --git a/db/migrations/032_add_meeting_key_to_meetings.php b/db/migrations/032_add_meeting_key_to_meetings.php
new file mode 100644
index 0000000..9a331ff
--- /dev/null
+++ b/db/migrations/032_add_meeting_key_to_meetings.php
@@ -0,0 +1,73 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $db = db();
+    echo "Starting migration 032.\n";
+
+    // Step 1: Add bni_group_id column
+    try {
+        echo "Step 1: Adding bni_group_id column...\n";
+        $db->exec("ALTER TABLE meetings ADD COLUMN bni_group_id INT(11) UNSIGNED NULL;");
+        echo "SUCCESS: Added nullable bni_group_id column.\n";
+    } catch (PDOException $e) {
+        if (strpos($e->getMessage(), 'Duplicate column name') !== false) {
+            echo "INFO: bni_group_id column already exists.\n";
+        } else {
+            throw $e;
+        }
+    }
+
+    // Step 2: Add meeting_datetime column
+    try {
+        echo "Step 2: Adding meeting_datetime column...\n";
+        $db->exec("ALTER TABLE meetings ADD COLUMN meeting_datetime DATETIME NULL;");
+        echo "SUCCESS: Added nullable meeting_datetime column.\n";
+    } catch (PDOException $e) {
+        if (strpos($e->getMessage(), 'Duplicate column name') !== false) {
+            echo "INFO: meeting_datetime column already exists.\n";
+        } else {
+            throw $e;
+        }
+    }
+
+    // Step 3: Add meeting_key column
+    try {
+        echo "Step 3: Adding meeting_key column...\n";
+        $db->exec("ALTER TABLE meetings ADD COLUMN meeting_key VARCHAR(255) NULL;");
+        echo "SUCCESS: Added nullable meeting_key column.\n";
+    } catch (PDOException $e) {
+        if (strpos($e->getMessage(), 'Duplicate column name') !== false) {
+            echo "INFO: meeting_key column already exists.\n";
+        } else {
+            throw $e;
+        }
+    }
+
+    // Step 4: Populate meeting_key
+    echo "Step 4: Populating meeting_key...\n";
+    $updateStmt = $db->prepare("UPDATE meetings SET meeting_key = CONCAT(bni_group_id, '_', meeting_datetime) WHERE (meeting_key IS NULL OR meeting_key = '') AND bni_group_id IS NOT NULL AND meeting_datetime IS NOT NULL");
+    $updateStmt->execute();
+    echo "SUCCESS: Populated meeting_key for " . $updateStmt->rowCount() . " rows.\n";
+
+    // Step 5: Add unique index on meeting_key
+    try {
+        echo "Step 5: Adding unique index on meeting_key...\n";
+        $db->exec("ALTER TABLE meetings ADD UNIQUE (meeting_key);");
+        echo "SUCCESS: Added unique index on meeting_key.\n";
+    } catch (PDOException $e) {
+        if (strpos($e->getMessage(), 'Duplicate entry') !== false) {
+            echo "WARNING: Could not add UNIQUE index because duplicate meeting_key values exist.\n";
+        } elseif (strpos($e->getMessage(), 'already exists') !== false) {
+            echo "INFO: Unique index on meeting_key already exists.\n";
+        } else {
+            throw $e;
+        }
+    }
+
+    echo "Migration 032 completed successfully.\n";
+
+} catch (Exception $e) {
+    error_log("Migration 032 failed: " . $e->getMessage());
+    die("FATAL: Migration 032 failed: " . $e->getMessage() . "\n");
+}
\ No newline at end of file
diff --git a/db/migrations/033_standardize_bni_group_id.php b/db/migrations/033_standardize_bni_group_id.php
new file mode 100644
index 0000000..0120d0c
--- /dev/null
+++ b/db/migrations/033_standardize_bni_group_id.php
@@ -0,0 +1,71 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $db = db();
+    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    echo "Starting migration 033: Standardize bni_group_id in meeting_attendance.
+";
+
+    // Ensure bni_group_id column exists and is nullable for now
+    $stmt_bni = $db->query("SHOW COLUMNS FROM meeting_attendance LIKE 'bni_group_id'");
+    $result_bni = $stmt_bni->fetch(PDO::FETCH_ASSOC);
+    if (!$result_bni) {
+        $db->exec("ALTER TABLE meeting_attendance ADD COLUMN bni_group_id INT(11) NULL;");
+        echo "SUCCESS: Added nullable 'bni_group_id' column.
+";
+    } else {
+        $db->exec("ALTER TABLE meeting_attendance MODIFY bni_group_id INT(11) NULL;");
+        echo "SUCCESS: Modified 'bni_group_id' to be nullable.
+";
+    }
+
+    // Check for orphaned bni_group_ids
+    $orphan_check = $db->query("SELECT ma.bni_group_id, COUNT(*) as count FROM meeting_attendance ma LEFT JOIN bni_groups bg ON ma.bni_group_id = bg.id WHERE bg.id IS NULL AND ma.bni_group_id IS NOT NULL GROUP BY ma.bni_group_id;");
+    $orphans = $orphan_check->fetchAll(PDO::FETCH_ASSOC);
+
+    if (count($orphans) > 0) {
+        echo "WARNING: Found orphaned bni_group_ids in meeting_attendance table.
+";
+        foreach ($orphans as $orphan) {
+            echo " - bni_group_id: " . $orphan['bni_group_id'] . " (" . $orphan['count'] . " rows)
+";
+        }
+        // For now, we will set them to NULL to allow FK creation
+        foreach ($orphans as $orphan) {
+            if ($orphan['bni_group_id'] !== 0) { // we don't want to update rows that have 0 as this is default
+                $update_stmt = $db->prepare("UPDATE meeting_attendance SET bni_group_id = NULL WHERE bni_group_id = :orphan_id;");
+                $update_stmt->execute(['orphan_id' => $orphan['bni_group_id']]);
+                echo "Set " . $update_stmt->rowCount() . " rows with orphaned bni_group_id " . $orphan['bni_group_id'] . " to NULL.
+";
+            }
+        }
+    } else {
+        echo "INFO: No orphaned bni_group_ids found.
+";
+    }
+
+    // Add foreign key if it doesn't exist
+    $fk_check = $db->query("SELECT CONSTRAINT_NAME FROM INFORMATION_SCHEMA.KEY_COLUMN_USAGE WHERE TABLE_SCHEMA = DATABASE() AND TABLE_NAME = 'meeting_attendance' AND COLUMN_NAME = 'bni_group_id' AND REFERENCED_TABLE_NAME = 'bni_groups';")->fetch();
+    if (!$fk_check) {
+        echo "Adding foreign key on 'bni_group_id' to 'bni_groups.id'.
+";
+        $db->exec("ALTER TABLE meeting_attendance ADD CONSTRAINT fk_meeting_attendance_bni_group FOREIGN KEY (bni_group_id) REFERENCES bni_groups(id) ON DELETE CASCADE;");
+        echo "SUCCESS: Foreign key added.
+";
+    } else {
+        echo "INFO: Foreign key on 'bni_group_id' already exists.
+";
+    }
+
+    // Now, alter the column to be NOT NULL. This will fail if there are any NULLs left.
+    // I will not do this for now, as the user might want to check the orphaned data first.
+    // I will let the column be nullable for now.
+
+    echo "Migration 033 completed successfully (bni_group_id is currently nullable).
+";
+
+} catch (Exception $e) {
+    error_log("Migration 033 failed: " . $e->getMessage());
+    die("FATAL: Migration 033 failed: " . $e->getMessage() . "\n");
+}
diff --git a/db/migrations/034_set_bni_group_id_not_null.php b/db/migrations/034_set_bni_group_id_not_null.php
new file mode 100644
index 0000000..56168b2
--- /dev/null
+++ b/db/migrations/034_set_bni_group_id_not_null.php
@@ -0,0 +1,37 @@
+<?php
+require_once __DIR__ . '/../../db/config.php';
+
+try {
+    $db = db();
+    $db->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
+    echo "Starting migration 034: Set bni_group_id in meeting_attendance to NOT NULL.\n";
+
+    // First, check if there are any NULL values in the bni_group_id column.
+    $null_check = $db->query("SELECT COUNT(*) FROM meeting_attendance WHERE bni_group_id IS NULL;")->fetchColumn();
+
+    if ($null_check > 0) {
+        echo "WARNING: Found $null_check rows with NULL bni_group_id. Attempting to populate them.\n";
+        
+        // Try to populate from the corresponding meeting record
+        $update_sql = "UPDATE meeting_attendance ma JOIN meetings m ON ma.meeting_id = m.id SET ma.bni_group_id = m.bni_group_id WHERE ma.bni_group_id IS NULL AND m.bni_group_id IS NOT NULL;";
+        $stmt = $db->exec($update_sql);
+        echo "Populated $stmt rows based on meeting ID.\n";
+
+        // Re-check for NULLs
+        $null_check_after = $db->query("SELECT COUNT(*) FROM meeting_attendance WHERE bni_group_id IS NULL;")->fetchColumn();
+        if($null_check_after > 0) {
+            // If still NULLs, we have to fail.
+             throw new Exception("$null_check_after rows still have NULL bni_group_id after population attempt. Cannot proceed.");
+        }
+    }
+
+    echo "No NULL values found in bni_group_id. Altering column to NOT NULL.\n";
+    $db->exec("ALTER TABLE meeting_attendance MODIFY bni_group_id INT(11) NOT NULL;");
+    echo "SUCCESS: Column bni_group_id in meeting_attendance is now NOT NULL.\n";
+
+    echo "Migration 034 completed successfully.\n";
+
+} catch (Exception $e) {
+    error_log("Migration 034 failed: " . $e->getMessage());
+    die("FATAL: Migration 034 failed: " . $e->getMessage() . "\n");
+}
diff --git a/index.php b/index.php
index 9d5b96e..76f8e29 100644
--- a/index.php
+++ b/index.php
@@ -42,6 +42,9 @@ $status_colors = [
     'negative' => 'danger',
     'in_progress' => 'warning',
     'positive' => 'success',
+    'present' => 'success',
+    'absent' => 'danger',
+    'substitute' => 'warning',
 ];