How to edit an existing approval flow that has a business rule

I need to adjust an existing approval flow in BPM worklist within the specific business rule:

I need to add two users in parallel with the first "GetAllRepresentatives" user (this equals the manager of the employee), I need it to be that either of these two users OR the manager is able to approve the workflow and whoever of the three approve it, the workflow would get pushed forward. All I can seem to do is add them in order. This case would be all 3 would need to approve, which is not what we need, we need to be able to add the manager, and 2 specific users to have equal approval powers that when