To change the setting for an existing pan and zoom point, click its row in the list in the Pan & Zoom tab. The position and zoom settings change dynamically as you move the grid control or manually change the values in the X, Y, and Z fields. However, the time setting does not change dynamically when you select a point and preview the session, but rather requires a discrete step, either clicking the Set to Preview Time button, or typing a framecount in the Time field and pressing Enter.