1. You can use F2/F3 to copypaste a range of notes. If you want to shift the notes, just add whatever to the measurement destination.
So if you copy 1:0 (beat 1, step 0) to 15:5 (beat 15, step 5) and want to shift four steps to the right, you would set the destination as 1:4 (beat 1, step 4)...