From your post I think you are working with elderly people or those who may have some cognitive impairment. While working in extended care we used this
http://www.hcifitness.com/PhysiostepPRO
Edit, it is this one
https://www.thera-trainer.de/en/thera-trainer-products/cycling/thera-trainer-tigo/
http://www.hcifitness.com/PhysiostepPRO
Edit, it is this one
https://www.thera-trainer.de/en/thera-trainer-products/cycling/thera-trainer-tigo/