For panning, the docs say:
Alt + MMB + Drag
Tracks the digicam left, proper, up, and down within the course of mouse motion.
I am not an UE5 dev so I can not take a look at this answer myself.
For future reference, Unreal Engine 5 makes use of Maya fashion controls – you probably have bother discovering navigation / UI data for EU5 instantly, attempt looking out for a similar factor with Maya as an alternative.