Using both parallel and serial in APINV / AME

I have been experimenting with parallel approvals in Payables approval process on a test instance (APINV in AME). Looks quite good but for some of my users I want an option on whether the approvals is parallel or serial.

In setting up the parallel process one step is to go into the Actions (Approvals Management Business Analysis Dashboard -> Payables Invoice Approval -> Setup -> Action Types) and changing the action type approval-group chain of authority from serial to linear.

This is a global setting and will impact all rules using the approvals-group chain of authority (AGca). It’s either off (all serial) or on (all parallel).