Do you need a team manager to do the first review of the timesheets before the final approval is given by the Finance department?
Configure up to two reviewers for the timesheet approval process. A timesheet is only approved when both reviewer give their approval.
You can configure either a person to be a reviewer or a role such as all team managers or admins. Team managers can only approve timesheets submitted by their team member where admins can approve all timesheets.