Yes, XData installation should do that for you.
Basically, you should have the following directories in Delphi library path:
T:\TMS XData\source\core\common
T:\TMS XData\source\core
And you should have the following directories in Web Core library path:
T:\TMS XData\source\core\common
T:\TMS XData\source\core\web
But, as I said, XData installer should do everything for you automatically.
If you plan to uninstall/reinstall XData, make sure you remove all the paths you manually added to both Delphi and Web Core library paths, to avoid confusion.