Okay, another question I have involves using hooks in order to change variables with the support ticket reply emails. I've used hooks to change menus but this is different. What I want is to get the contact ID instead of the client ID and also make sure that the template name I am using is correct. Here is the header I'm doing so far for reference:
//Output additional merge fields in the list when editing an email template
add_hook('Support Ticket Reply', 1, function($vars) {
$merge_fields = [];
}