I have a user request to create a shared calendar resource containing events (not meetings) that may be of interest to a small subset of my users, e.g. deadlines, contract expirations, etc. This arrangement would need to be able to send or display reminders at some interval before the event (maybe one or two days prior). I can't seem to find clear information on how to create and maintain such a group. Most references online point to third-party utilities.
Our environment is Exchange 2010 with a mix of Outlook (2007/2010), Outlook Web Access, Apple Mail and Mozilla Thunderbird on the client side.
edit: Is there a recommended third-party utility to do this? I'm looking for reminders, not meeting invitations.