I am working on adding a community calendar to a site but have a specific hack in mind. Not sure where to start.

The current form, works for the super user as I want them to have access to post events to any category and have visability to the entire event form in new/edit views.

But I also want to create a form that allows the public(guests) to post an event to the calendar, but only for select categories, and without access to 'Recur Rules' or 'Class' sections of the form.

I attempted to block access to post by categories using permissions but I still want the public to have read access to the events.

I am envisioning a block that I could associate both group permissions and categories with but have no idea how to creat such a block/hack.

Any insight in how I could get this effect is greatly appreciated.

Cheers,
Gregg