First, we need a place to manage our jobs. We will use the "Custom Tables" feature of Projekt X.

1. Go to Admin > Custom Tables and create a new table.
2. Name: Cron Jobs
   Technical Name: cron_jobs
3. Add the following fields to the table:

   Field Name	Type	Description
   job_name	Text	A descriptive name for the task.
   script_file	Text	The filename of the PHP script (e.g., backup.php).
   interval_minutes	Number	How often should it run? (e.g., 60 for hourly).
   last_run	DateTime	Stores when the job ran last.
   is_active	Checkbox	To enable or disable the job.

Create a file named scheduler.php in your project's root directory. This script will be the engine of your automation.

<?php
// scheduler.php

// 1. Initialize the application environment
// This loads config, database connection, and helper functions
require_once 'init.php';

// 2. Security Check
// Only allow execution from Command Line (CLI) or via a secret token in URL
$secret_token = 'YOUR_SECRET_KEY_HERE'; // Change this!
$is_cli = (php_sapi_name() === 'cli');
$token_match = (isset($_GET['token']) && $_GET['token'] === $secret_token);

if (!$is_cli && !$token_match) {
    http_response_code(403);
    die('Access Denied');
}

echo "Scheduler started at " . date('Y-m-d H:i:s') . "\n";

// 3. Find the physical table name for 'cron_jobs'
// We look up the table definition by its technical name
$table_def = DBGet('custom_tables', null, ['id', 'team'], "technical_name = ?", ['cron_jobs'], '', 1);

if (!$table_def) {
    die("Error: Table 'cron_jobs' not found.\n");
}

$physical_table = "data_team_" . $table_def['team'] . "_" . $table_def['id'];

// 4. Fetch active jobs
// We select jobs that are active
$jobs = DBGet($physical_table, null, ['*'], "is_active = 1");

if (!$jobs) {
    echo "No active jobs found.\n";
    exit;
}

foreach ($jobs as $job) {
    $interval = (int)$job['interval_minutes'];
    $last_run = $job['last_run'] ? strtotime($job['last_run']) : 0;
    $now = time();
    
    // Check if it is time to run
    // (Current time - Last run time) >= (Interval in seconds)
    if (($now - $last_run) >= ($interval * 60)) {
        
        $script_path = __DIR__ . '/jobs/' . basename($job['script_file']);
        
        if (file_exists($script_path)) {
            echo "Running job: " . $job['job_name'] . "...\n";
            
            // Execute the job
            try {
                // Include the script to run it in the current context
                // Alternatively, use exec() for a separate process
                include $script_path;
                
                // Update last_run timestamp
                DBUpdate($physical_table, ['last_run'], [date('Y-m-d H:i:s')], $job['id']);
                
                echo "Done.\n";
            } catch (Exception $e) {
                echo "Error running job: " . $e->getMessage() . "\n";
            }
        } else {
            echo "Error: Script file not found for " . $job['job_name'] . "\n";
        }
        
    } else {
        // Job is not due yet
        // echo "Skipping " . $job['job_name'] . " (not due)\n";
    }
}

echo "Scheduler finished.\n";
?>

Finally, you need to tell your server to execute the scheduler.php file every minute. This ensures that your jobs run exactly when scheduled.