I'm sorry, but we use GW with a german gui, so I cannot tell the exact words of the messages.

But I try to describe the problem: Some of our employees get invitations for appointments by external people, who use outlook. When they accept these appointments, the outlook-user gets a notification, that his appointment has been accepted by our employee "under reserve" (conditional acceptance). Our employee has just clicked on "accept".

So my question is, is there a way to configure this setting? That the appointment is accepted without condition?