While you technically could do that, from the sounds of it that would take a few weeks...
I would write a script something along the lines of this:
Code:
#!/bin/bash
for USER in `zmprov -l gaa` do;
zmmailbox -z -m $USER cm --view appointment -F# /sharedcal share@domain.com /Calendar
done; You might put in stuff like checks if the mount already exists or other things, but there is the basis for you.