Yes , Their are 4 Role in Power apps Dropdown as "Facility Manager", "Outage Manager" ,"Project Manger", "Project Lead" any of these 4 Role could be selected. user would be select 2 , it could be select 3 or 1 also. As you can see Project_ID is same for both the Role only Assign Person are different.

So the Approval should go to First Assigned person if he Approve it goes to the next and so on. at last Approval should be completed if all approve if they are been assign.