Newb Queston on Add-ons

I noticed that some of the add-ons for Hassio require to put username/pass or some type of token. I wanted to know if these could be put in the secrets.yaml and use the !secret on those? I did not see any information regarding that so I was not sure. I saw one that said you could do that but I figured it was baked into that add-on and not all the others.

Thanks ahead for any help.

It depends on the addon. Some support it, some don’t.

Ok that is what I thought but was not 100% sure. So just testing it should work then.