It's not the most simple thing to do, but it's far from the most complicated either. Without a more detailed description of your database design, I can only give a general answer:
If you set up a table of such a "schedule" of actions, you can set up a script that does a once a day check of the data in this schedule and then use it to generate any new records in another table to log the new transaction. There are several different ways to set up a script so that it is performed once a day. This can be done from a schedule in FileMaker Server, a FileMaker "robot file" from an OS task manager such as Windows Task Manager or via a script that is performed every time you open the file.
Hi, thanks for your reply - I was thinking it would need a new table such as schedule.
I currently have a table called payments (in and out), Accounts, Suppliers and Categories (Type of Purchase).
It all works at the moment - very simple, but the ability to add repeating payments would be fantastic. I'll give it a go.