Help with Mac and figuring out if the program is running…

I used to have my mac show my bar vertically and what was good about it was that when I closed the programs it showed a white dot that indicated that it was still running in the background. When I switched to horizontal mode it doesn’t indicate anything, the only thing I have to do to make sure it’s not running it close it and right click it and click quit.
How do I make it where I can have those white dots in horizontal mode? Or at least check to see what processes are running easily?
Thanks.
Answer #1
Don’t know much about mac, but activity monitor will show you if the process is running. Not sure if that constitutes “easily”.