In Manage | Database | relationships, make a new table occurrence of YourTable by clicking it and then clicking the duplicate button (2 green plus signs). You can double click the new occurrence box to get a dialog to appear where you can rename the new occurrence box.
We have not duplicated a table. Instead, this is a new reference to the same table already present in your database.
This new occurrence of your existing table can now be linked in relationships kept separate from the relationships linking to your original occurrence of this table.
If "Table Occurrence" is a new term, you may find this thread helpful: Tutorial: What are Table Occurrences?
I'm an rpg/As400 programmer from back in the old'n days.
Really like Filemaker Pro but I'm learning as I go. Spent 5 years in BigMachines software and liked it too.
Thank you so much.