Edit animations from imported file

I would like to edit animations from my imported blend file inside Unity. What I specifically want to do with the animations is enable/disable objects. I already know how to do that, but the animations say “(Read only)”, and I can’t edit them. Is there a way to sort of “disable Read only” for my animations? If so, please feel free to leave a reply.

Does duplicating these files (Control+D) remove the read only lock, allowing for editing?