Approval should work in combination of parallel and serial in BPM Approval

Summary:

While creating expense report , i have created 2 expense type and each type is having one project

Example Cab expense of 1000 is charged to project DE01 and Food expense of 200 is charged to GA01

Approval should go to each project owner parallelly and if they don't have limit then it should also go to supervisor of project owner , hence i created a participant as parallel

ISSUE DESCRIPTION: If project owner doesn't have limit , BPM rule sends approval to project manager and their supervisor also parallelly

ASK : I want approval should go to 2 project manager paralley and if they don't have limit then serial approval should follow from project manager only for supervisor approval