I'm having issue in a Sharepoint-based application. We are using a list as a news feed, and we want to give permission to users to write news in that feed.
Each news has a category: our problem is that we want persons of a certain group to only be able to create new entries with a given category.
We must keep everything in a single list. Basically, it comes down to this: how do we allow only given groups of users to use given values of a select box ?