Inspired by @Paul Mudditt's technique for creating macros that allow use of Designer functions in Photo, I made a macro that allows one to create an Artboard in Photo. Steps to do this:
Open Publisher.
Create new document without a Master Page.
Switch to Photo Persona.
Start recording a macro.
Switch to Designer Persona.
Select Artboard Tool and draw an Artboard.
Switch to Photo Persona.
Stop recording. Save the macro into the library. Export the macro category. Import into Photo application.
One can then create a new document in Photo, play the macro, and then the document becomes an Artboard.
That works once. However, playing the macro a second time causes Photo to hang, using a high amount of CPU. (Note: this also happens if, after step 8 above, the macro is played a second time in Publisher's Photo Persona.)
My Macros.afmacros