That is a broad question, however, In my experience, most MCC's have a range of drives for example, DOL, Star/Delta, VFD's, Two speed etc.
It will depend on the design, some will have terminals for the input/outputs in each compartment for the drives, some will have terminals arranged in banks on the sides, top or bottom of the main cabinet. Klockner did a design for a well known multi national company where each compartment had a standard arrangement of terminals, the number of terminals were to cater for the majority of drive types so even if not used it was a standard layout.
As for connections that is a very open question. Try to explain in more detail of what you are trying to achieve.
In general, there will be a bank of terminals for each drive these will consist of signals from PLC outputs to energise (start) the drive & feedback to PLC inputs for things like running/trip etc, in the case of VFD's these could be discrete inputs/outputs, communication for networked drives & analogue in/out for speeds etc.