Are you trying to integrate only a Ring Doorbell? If so, the easiest way of doing so is to use Amazon Alexa Routines.
The basic flow is enable the Ring Skill in Amazon Alexa. Then add an Alexa Routine that is triggered by your Ring Doorbell (either Motion or Doorbell Pushed). In that Routine, turn on a Hubitat Virtual Switch (with momentary feature enabled).
More details can be found in the following thread.
