Accessing/Editing Macros is Personal.XLSB File in current Excel for Mac (365 Subscription)

I have created a Personal.XLSB file for Excel Macros here on my Mac, however I cannot open this file and thus cannot edit macros in it.  Searches of the web only turn up Windows instructions to "Unhide" this workbook, but the command to do so does not seem to be in the View or Developer Tabs of Excel (and cannot be added via editing the Ribbon via Preferences; what am I missing.

Thank you,

Steven