Although the Control-drag function in XCode does not work over VNC or remote connections, one of our clients, David W., shared the following workaround with us. It is not a complete solution, but it will allow you to make some of the same connections without dragging.
Please find the solution here:
Many thanks to David for sharing this! If you have discovered solutions that we should know about, please let us know: firstname.lastname@example.org.