I enjoyed playing with this and have a similar thing for delay.
Sequencer is controlled by BPM and division of time which also does Tremolo rate. Tremolo control for depth and shape also on page 1.
Aux goes to second page for the 4 knobs to create tremolo patterns.
Low C is used to toggle the sequencer on and off. (Aux can only do so much!).
Big thanks to Alexandros Drymonitis for answering my mails and doing the only clever bit of this!