How to find organizations along the route?

Question

JavaScript

https://www.topreg.ru/logistika/kalkulyator
There is a calculator here. There you can check the checkboxes, for example, Gas stations or Cafes, and it will show them along the route.
How is it done?
I did not find anything similar in the documentation of ya.kart.
I’ll clarify how to build a multi-route, I know, I just need to find all these cafes with gas stations around the route.