Multibody docking active sites?

It means I do not need to generate AIR files for multibody docking.
just to submit at the restraints the TBL file with the restraints of the different segIDs A-F

Indeed, provided you have enough Xlinks. Otherwise, I would advise you to also turn on center of mass restraints to favor compactness of the solutions.

Can I add intraprotein distances in this list as well? For refinement of the individual molecules?

Yes you can. The TBL format is rather flexible and you can mix intra- and inter-molecular restraints. If needed, you can use the unambiguous, the ambiguous and the hydrogen bonds restraints fields to provide your TBL restraints.

Best,
Adrien