Today i wanna teach you friends that
How To Set Password For App's
For this Purpose follow the following easy steps ;)
Facebook => Account Settings => Security => App Passwords
Some Facebook App's Can't receive security codes, which means you could be temporarily locked out if you have log-in approvals turned on. You can use an App password instead of using your account password to securely log in to the App's such as Jabber. Skype, Xbox.
How To Set Password For Application's in facebook