Zapier scheduled dispatch

I have been using zapier to take one app submission and create a dispatch for another app. This way we can print the first one off (midstream) and still generate a dispatch work order for the supervisors to complete. I’ve noticed that you can only use the immediate dispatch function in this setup. There is a field for “schedule at” but it requires a field with “dd/mm/yyyy hh:mm”. There is currently no app field that can satisfy this.