Will FCS let me take over towns?

Pretty much title. I really like the idea of taking over small bases I defeat and using them as my own base of operations. I don't really think I'll take entire towns, but for example I'd love to repair the Dusk King's Tower or the Cult Farm and use them to my own ends.

I have no real knowledge of FCS or how to use it, but if it would allow me to go into my save and transfer ownership of small settlements to myself I think I'd go figure it out.