@Florian_Junge Not sure if this will help you, or if I’m reading your requirement correctly, but I have similar many-to-many situations, and I often use the bridge table to provide the nested rows (in Deck view format) and configure inline reference actions in the nested view, so that although it is the bridge table, it looks and acts like the table I want.
So in your case, I would
- set table C’s label column as TableBId
- in table A, set the [Related CIds] column Display name to whatever your table B objects are
- create any inline actions I wanted to perform from the TableA inline nested view (TableC) as reference actions for Table B
- in some cases, set the Row Selected Event behaviour of the inline nested view (TableC) as a LinktoForm to the relevant Row of Table B
I’m no expert, and would defer to @Steve, but this is how I do it. Many-to-many bridge tables certainly cause a lot of headaches!