How do I set my travel policy, and who approves what?

You set the rules once. Laure applies them on every search.

You set a cap per night, the hotel categories you allow, and the amount above which a trip has to be approved by a person.

Laure checks those rules on every search. She only offers hotels that fit your policy, and she tells your employee why a hotel is not showing.

Below the amount you set, the trip goes ahead without waiting for anyone. Above it, it waits for the person you named.

You can also set different rules for different profiles, if you need to.