When notification of an upcoming appointment appears on the screens of our pc's, it remains visible for maybe 10 seconds, which allows the user to click on "clear" to stop the notification from returning again and again. On one pc, however, the appointment notifications appear, then are gone in a second or two. We know how to change the amount of time prior to the appointment the notifications should start, but can't find how to change amount of time the notice stays on the screen. Thanks for any suggestions.