We're using SDP 10009. We have some custom fields set up. For two of the fields, we want to make them required based on the value of another field. Here's our set up:

Essentially, if the technician has  Visited Site = Yes, then  Mileage and  Travel Date are required before the ticket can be closed.

I looked at the Request Closing Rules and it seems more like a global list of required fields.

I thought about going into Business Rules and creating a rule, but it seems like I would need to create two rules:

I say two rules because I can't use OR and AND in the same set of rules (or maybe there is and I'm not seeing it). Would this be the best way to handle this? Thanks!