Thanks for the help. I think I will have to code it. What I really want to do is to have the user be able to enter a range to view. For example, if there is a 1-2 hour period that they want to zoom in on, they can enter the start and end time they want to view. I would like this to be entered in a cell, rather than going into the chart options and modifying that way.

Again, thank you!