Alternate Approval setup _WCP

Hi Folks,

I have one of the requirements from the client like once the manager submits the worksheet then it needs to go for three person and any one of them can claim and approve. For that I have configurated using the alternate approval like user A in the worksheet manager columns and selected three approval managers with the same sequence number 10 for all three. But the notification triggered randomly for one user, once it got approver then goes for the other users which is wrong. Can you please suggest any amendment that needs to do or how it work if