Install with administrator rights: what does Brave want?

Hello. When I intall Brave at my job computer, as I don’t have Administrator rights, after failing in installation with admin rights it prompts me that Brave can be installed without administrator rights.
My question is: why is Brave trying to install WITH admin rights, if can work without them? What wants to get from that rights?
Thank you.

Any idea? I’ve looked for info but nowhere cares about why administrator rights are asked first.