Linking Universe in IDT

I want to know the options for linking universe in 4.0 and above. was it discontinued on IDT. I do not see the option of how to link the universe in 4.0;

in 3.x we do it by File> parameter> Add Link and we add the universe. Similarly do we have any other options if not the same in IDT.

I do not see any discussion on linking universe in IDT.

The current alternative that I have is to build them in UDT and upgrate them to UNX. Before that I would like to try doing it in IDT.