As an approver, your actions to approve a trip are more or less the same than to approve a report. 

If you have different role, you should go on the Approve section.
On the left bar, you must select the Trips overview.

From the Trips overview, you can approve the trips. The trips to approve will have the status 'Requested'. By clicking on the Trip, you will see the trip details and you can approve it. 

Did this answer your question?