Alternate AL DEs cannot access another's /home

Hi guys,
I have a multi-linux system where Calculate is my main OS and has its /home in a different partition. ArchLabs Openbox is able to access and use data from this other /home by a simple root password prompt. When i change to AL Awesome, however, i get 'access denied" trying to go to the other /home. If i change to root everything except ArchLabs disappears.

Somewhere i read i need to add to my .xinitrc. If this is correct, i need to know which .xinitrc, and what to add there. All suggestions appreciated whether instructions or pointing to appropriate wikis. Many thanks!