It is by default as far as I can figure out. What do you need?Can the TSDZ2B mid-drive on your Shangrila secret project X bike be programmed to cadence sensing mode?
Here's how I reckon it works. There's a low minimum torque to activate the motor. Nothing happens until the pedals rotate as well as getting the minimum pedal force. The motor will give low power, which I estimate to be about 30% maximum as long as you pedal. If you press the pedals harder, the power steps up to a higher level as long as you keep pedaling hard. There's some smoothing on that because you can't feel surging with each pedal stroke.
It's quite a good system and I like it, but it really needs a boost button that would give maximum power with low pedal effort when you want it, like the throttle function with the KT controller. It has a throttle, but it can't be configured to only work while pedalling.
It has 4 levels of assist. I only use the maximum one because its two levels of power are about right for me.