Hello.

Do you mean that to make the Ray Desktop link accessible by your members you need to enable Web Presence?

If so, you can make it available even without referring to Web Presence.

The link usually looks like this:
http://yoursite_url/ray/modules/global/app/Agent_v3.5.0000.exe

You can create a Navigation Menu item and specify the link there.

Regards,
Igor L.