Manual Approval - Without Updating Flow Designer

[Manal AQUIL]

Hi Community Members, 

Kindly, help me solve below scenario:

Scenario: We have an RITM/ Change where approvals have already been triggered for certain people. Now,  we want to add additional approvers  or update existing  approvers.

Solution: 

1. I tried to add Manual Approver (Users) in approval action activity in flow designer. This enabled that whenever an existing RITM or CHG will get new approval inserted then that approval record will also get tagged to flow context and hence approval of the newly inserted approver is also required.  But this solution will require a lot of manual work if I want this manual approver functionality for more than 150 Flows .Hence, I want a generic solution.

2. So as a second solution, I tried to create a UI action on task table (so the button will be visible on RITM/ CHG) i.e when button is clicked on RITM then it will update the existing approver attached to RITM and since existing approval is updated and hence flow context also doesn't break . But this solution only worked when I tried as an admin User and doesn't work for non admin user .

Kindly, suggest a feasible solution so that I can update or insert new approval to RITM or CHG and upon approved by new approver the flow should move forward (without breaking flow) . 

Thanks,

Manal Aquil