Yes! This is an amazingly useful feature, and one that we use a lot.
For large elaborate seating charts, or for seating charts that you use very often, we recommend that you have a "Main Chart", and the purpose of this chart is that you only use it to make copies of. So this chart has all of your correct layout, already done and is ready to be cloned for a real event seating chart.
Once you have made the copy, then you will name and edit the chart according to your event, that way it is easy to locate. This is all just a suggestion however, but we are trying to make your lives easier :)