Arturia BeatStep Pro MIDI/Analog Controller and Sequencer Kit with CV/Gate Cables (Black) - Manual (Page 36)

3.3.5. Default Sequence Length
The default length is 16 steps, but a sequence can be up to 64 steps long.
If you’d like your sequence to be less than 16 steps long, simply hold the LST STEP button
and then press the Step button that corresponds to the desired setting. If you'd like it to be
longer than 16 steps, see Lengths > 16 steps [p.32] below.
3.3.5.1. Sequence Follow mode
When working with sequences longer than 16 steps there is an important feature to know.
When the double arrow buttons (<< >>) are pressed at the same time, their LEDs will toggle
off and on. This takes BeatStep Pro into and out of Sequence Follow mode.
When this mode is active during playback, the Step Group LEDs and the Step buttons will
show steps 1-16, then steps 17-32, then return to steps 1-16, and so on.
When « » LEDs are Sequence Follow mode is
Dark OFF
Lit ON

♪ : The playback of the sequence itself is not affected when Sequence Follow mode is disabled.
This only affects what you are seeing, which should make it easier to edit particular portions of the
sequence.
31 Arturia - User Manual BeatStep Pro - The Step Sequencers