Change the CSS of other pages than the home page

I have created a wordpress website with buddypress for a small group of members (30).
I ‘m using your plugin to cmodify the CSS. It’s great. I can to do changes by code and visually on the home .
Now, I would like to use it to change the style of the members page.
I entered manually some codes and it works. However, I don’t see how I can do it visually ? Is it only available for the home page ?

Thank you.