Can I set a different password for my range extender network from the main router network so that I can keep keep it private?

Ok, I was able to change the name but I would still like to have the extender network have a separate password. Thanks.

I have search the app but I cannot find where I can change the name! Could be more specific. Exactly where and how would be more helpful. Thank you.

I would like to change the name of my network of my extender from HarborWiF_EXT to GoldenEagle and give it a separate password so that others in my apartment complex won't be jumping on and using it.