Pattern change via MIDI & copy paste of MIDI trax

most probably two stupid no brainer questions:

  1. I would like to send pattern change information to my Roland TR-8 connected (as slave) and synced to my DIGITAKT. How and where do I do that to steer the pattern number from the DT if possible?

  2. How do you copy paste sequences inside a MIDI Track to another MIDI Track inside a pattern inthe DT?