Calendar Permissions

[keharris53]

Hello,
I've checked vbulletin.com and cannot find a resolution to my problem, which may be easy for some of you here. I am attempting to set up access to a private calendar for a group of users. I've created the additional calendar, but am having problems making it visible to only one group of users. I created a new usergroup I'll call "newcalendar". Some of these users are members of usergroups that have more access via permissions than other users within the newly created group. I hope this is clear. I've tried using the custom permissions.
See if this makes sense:
group B is a member of the "newcalendar" usergroup and can view and therefore has access to the new calendar.
group A has greater overall access on the boards than members of group B. Some members of group A are members of the "newcalendar" usergroup, and although given custom permissions to view the new calendar, cannot see it, therefore are unable to access.
Some members of group A are not members of the newly created "newcalendar" usergroup and are not authorized to view the new calendar.

I hope this doesn't sound too convoluted. Essentially I need those members of group b who are also members of the newcalendar group, to be able to view the new private calendar. All other board members who are not members of the newcalendar usergroup will not see the new calendar in the drop down box. Thanks for any assistance you can provide.

I'm using 3.8.4 pl2