I will keep it short. I want to add a custom period of time in Fluent Booking WP plug-in. I managed to write the right code to do this, but when I want to add the webhook in Fluent Booking, it asks for a URL. I really don’t understand how can I link the code I’ve wrote to the plug-in.
Can somebody guide me on how to add this custom webhook?

Below is the code.

apply_filters('fluent_booking/week_select_times_schema', [
'start' => '00:00',
'step' => '00:15',
'end' => '24:00'
]);

I’ve tried snippet plug-ings but none worked.