Get all user's approval even if one rejects

Hi,

 I have a process where i need to take Approval from Approvers.

Approvers are coming from people and groups field of sharepoint.

I want to generate approval request for all approvals.

I tried using 'Request approval' and 'Assign Flexi Task'. But if any of the approver rejects the request, it cancel's remaining tasks with status set to 'Not Requered'.

But my requirement is that i want to take comments from all approvers and Remaining tasks should not be canceled when an approver rejects his/her task.

I tried generating individual task for each user by using foreach on user collection. But that makes the process sequential and i require it to run in parallel.

Thanks