how to add a THROTTLE onto a PEDAL ASSIST bike

Here are links for the primary parts used in this video:
► Motor controller: https://amzn.to/46CmSMi (Amazon)

Background Music song #1 :
► Track: Jim Yosef - Arrow [NCS Release]
► Music provided by: @NoCopyrightSounds
► Watch: https://www.youtube.com/watch?v=5LI5QZVUU98

Background Music song #2 :
► Track: Jim Yosef - Eclipse [NCS Release]
► Music provided by: @NoCopyrightSounds
► Watch: https://www.youtube.com/watch?v=1WP_YLn1D1c