Sorry for my poor explanation. Let me try to give another example.
Due to the trial version cannot allow to change the Port Number, I use two PCs to test it.
In the 1st PC, the UniGUI main application is installed and run in PC's windows service manager.
In the 2nd PC, the UniGUI Sub application is installed and run in PC's windows service manager.
I use the browser (localhost:8077) to open the main application, then I click the link in the main application for opening the sub application by:
ShellExecute(Handle, 'open', PChar('IP_Address:8077'), nil, nil, SW_ShowNormal);
it should open the sub application in a new tab of the same browser, but it can't.