The default localization site for Unidata AWIPS is BOU (Boulder, Colorado, where UCAR is located). When you are prompted to connect to an EDEX server, you can change the WFO ID as well.
Since release 16.1.4, CAVE users can switch the localization site to any valid NWS WFO from CAVE > Preferences > Localization, where edits canbe made to both the site ID and EDEX server name. Click Restart after changes are applied.
Change the site (example shows TBW Tampa Bay) and click Okay or Apply and confirm the popup dialog, which informs you that you must restart CAVE for the changes to take effect.