Inventory Widget: How can I limit users to select one widget only?

I am finalizing a form with 2 inventory options. The client should choose one of them but cannot choose both of them. How to set it up?

regards,

Since you are using separated widgets you will need to add some conditions to evaluate when any of the widgets has been filled. I think you may display a message indicating more than one option has been selected and hide the submit button. You could additionally hide all the other widgets once at least one of them is filled. 

I would suggest you to take a look on the following guide that will help you with the show/hide conditions: https://www.jotform.com/help/316-How-to-Show-or-Hide-Fields-Base-on-User-s-Answer 

I hope this helps.