If you are trying to approve an order or invoice that has all GL codes picked, but you do not see the Approve button, it is probably because PCU Support is not moved over as an approver on the Rule.

Example:

Below you see that there is no one moved over for the Traditions of Hanover Invoice Rule at the ‘Orderer’ step.

Because of this, we were not able to see the Approve button. All you have to do is move PCU Support over as an approver as shown below, and you will then be able to Approve the invoice(s).