10.4 : Adding IBX after installation

I've installed Delphi 10.4 from ISO.

Based on the comments at https://code-partners.com/errors-in-getit-when-installing-rad-studio-10-4-patches/ I have "switched" to an on-line installation.

During installation I did not install InterBase Express, which I now need. How can I install the files that, in previous versions, were in c:\Program Files (x86)\Embarcadero\Studio\20.0\source\IBX\