How to logout from Skype to relogin under other name?

How to logout from Skype to relogin under other name?

I mean skype for pad-sized computers.

If I press avatar, then I have "exit" entry at the bottom. But if I click this entry, then Skype just closes. If I open it again, then it enters under old name again.

I want to logout so that it ask password.

Is it possible?