Multiple Hard Drives With Plex

My apologies if this has been asked before. I have seen several comments on line but they don’t really answer the question. Is it possible to add an additional hard drive to Plex when your current drive is full? If someone could explain I would be most grateful.

Yes, you just have to edit your current library and add the folder that you want.

I think the above screenshot creates more confusion than clarity.

Yes, it is possible to point a library to more than one folder/drive/networkshare.

Thank you very much for your guidance.