I would stick to Thomas's recommendation and use the details pane, it was designed for exactly your use case. The requirements panel is based on a view, so it might already have filters that prevents your record from showing up. Example: On the map, you select a WO/RR that has already been booked. The requirements panel however only shows unscheduled RRs and thus will not be able to show the one you selected.
Btw, for the 2 settings mentioned above we have just released brand new documentation a few days ago.