(each containing multiple Catagories, Sub-categories, Forums and Sub-forums.)
They would share a common dB so that once a user has logged into a portal they could easily switch between "categories/instance's" without having to login again.
Example: Browse to Domain Portal - Select Instance 1 "Fruit" (or any other instance) and login. Browse News, Bulletins ect and then return to Select Instance 2 "Nuts" since you're already logged in you're able to start browsing, posting, etc.
Instance 1: Fruit
Categories 1: Citrus Fruit - plus many additional Categories
Sub-categories 1: Clementine - plus many additional Sub-categories
Forum 1: Nutrition - plus many additional Forums.
Can I do this with 1 license and is it possible?