Notes/Domino 4 and 5 Forum

I have a sales db (Notes client) which has a Calendar style view showing calls for the salesperson concerned by using @username in the selection formula as in
SELECT form = "fSalesCall" & salesperson = @name([cn];@username).

This works at the moment because the reps always use their local replicas (laptops) rather than the server. However with the advent of Broadband/DSL and now some new internal reps linked to the Server this method is no longer going to work.

I though of using a form with the Calendar embedded on it and single category instead but don't think this works as you have to have the first column as time/date.

Can anyone suggest a solution?
Thanks