Outlook 2010: How to change Exchange data file (ost) display name

Hello -- I'm wondering how to change the display name of a data file (not the actual file name) for a .ost Exchange 2010 file. I have already changed the file name and location to match all my other mailboxes.

If you look at my screenshot, you will see the file location and name are fine, but the display name is still just my email address. I would prefer it to be something easier on the eyes (I know, not necessary, but would be nice to help keep me organized.)

This is also the name that shows up in my Navigation Pane. Thanks so much!

In this window (you have posted screenshot of) click on the name of a file you want to change. Settings button will be activated, click that button - you can edit the name in the new window in the name section.

No place to change the name

Unfortunately, there's no place to change the name in the Settings button. I obviously can't change the Exchange server or mailbox. There's nothing under the Advanced tab either.