They are on the bottom-right corner of my RSD and Grid Builder workspaces. I also see one or both of them in certain drop down tools.
When I click the mic-looking one it turns the other one into a pause button - like it's recording audio. But it won't turn off when I click either. When it's not a pause button, the one on the right looks to be a "refresh" of some sort.
I just want to be sure I'm not missing some important feature of this software. I hate being ignorant of the tools I'm using.