Link multiple outport ports to one input port

I'm designing an app that allows users to have two different portals to sign up since it requires different information but similar interfaces, which means I need to link two tultiple outport ports to one input port. But I find out there is no way to do this on Adobe XD, Sektch and Figma. In this case, I have to create two independent projects and show them separately to customers. Is there any other methods to simplify this process or any other ideas to do this?