In case of multiple approvers/reviewers , this is how Adobe works:
If a list of reviewers is defined, a job is approved as soon as one reviewer has accepted it. The relevant approval link is then no longer offered in the dashboard. If another reviewer clicks the approval link in the notification message, they are notified that another operator has already approved the job
In the event of single approval, the transition corresponding to the choice of operator is activated and the task is finished: the other operators cannot reply.
In the event of multiple approvals, transitions corresponding to the choice of each operator are enabled. The task is finished when all operators of the group have replied, or when the task has expired.
This activity does not block processing, and the workflow can perform other tasks while waiting for a reply.