Represent Form Check-boxes and Radio-buttons in BPMN

I have a form where the user needs to make some selections before loading data from the system. I need to create a flow for this using BPMN, but not sure what is the best way to do so. I am basically doubtful on correctly representing the check-box and radio-button selections:

  1. 2 check-boxes, either one is selected, or both or none.
  2. 2 radio-buttons, each of which has 2 options, either of which needs to be selected.