By default all Admins and Managers can approve expenses but you can override this by creating staff groups who have permission to approve expenses for staff members.
To do this firstly go to your Staff Directory and check the box next to each staff member you want to add to the group and then click on Add to group. Type a name in the box and click on Save
The new group will appear in the list on the right hand side of the page under Browse staff by group
Now you just need to go to your staff member’s profile pages and click on their Settings tab. Under staff groups that can approve …..’s expenses check the box next to the name of the group you want to use
The persons named in that group will now receive all of that staff member’s expense claims