Two questions on shortcuts and closing out unneeded timelines

Just wondering if anyone knew of a keyboard shortcut for moving between open timelines

And

If you have, say, three timelines open and you want to close one of them how do you do that without closing all of them at the same time?

Thanks for your help.

Ray

You use the forward and back shortcuts to move between previously open projects. Cmd--[ and ]. There is no close project function or shortcut. Everything you opened into the timeline is open and available until you close the applications.

Thanks much!