Delete Facebook Login History Mac Deleting Login History On FaceBook.?

Deleting Login History on FaceBook.? - delete facebook login history mac

Let me say, I have a Mac, if it makes a difference when he says startup

Whenever I do a lot of Facebook messages from friends and family, who have signed to develop on my computer. I delete all directions and only me, but I do not know how.

Please can someone help?

Thank you very much!