Arturia BeatStep Pro MIDI/Analog Controller and Sequencer Kit with CV/Gate Cables (Black) - Manual (Page 106)

10.6.4.3. Copy/paste notes
After selecting a group of notes you can make another copy of those notes in another
section of the sequence. Just hold the Alt key (Option on a Mac), select one of the notes, and
drag them all into the new area.
The new notes will have the same velocity and gate time values as the original notes.
10.6.4.4. Note velocity
If you click on the top of a note box you will see the cursor become a vertical arrow icon.
Drag the cursor up and down to change the velocity of that note to a value between 1 and
127.
The color of the selected note will change to indicate the velocity value: white is the lowest
velocity value and red is the highest velocity value.
When the velocities of multiple notes are edited at the same time they will all change to the
same value.
101 Arturia - User Manual BeatStep Pro - MIDI Control Center