Arturia KeyStep Pro Keyboard with Advanced Sequencer and Arpeggiator - Manual (Page 62)

4.2.15. The Sequence Extend Section
These five buttons and their associated Shift functions enable you to view and set the step
groups of your pattern in great detail.
To start with, you can set the length of a pattern or sequence by holding down the Lst Step
button and pressing one of the step group buttons (16, 32, 48 or 64). The maximum length is
64 steps. This works whether you are recording in Step mode or Real-time mode.
Within a page, you can further refine the pattern length by holding down the Lst Step button
and pressing a step button.
Pressing 'Shift' + Lst Step / Follow lets you follow the actively playing step while the
sequence is playing.
In Drum mode, when Poly is activated, the individual drum tracks can have different
lengths.
56 Arturia - User Manual Keystep Pro - KeyStep Pro Overview