Can you set more than one limit on the same component?
I have an active peak, boss wants a chart which shows target, upper and lower values. No problem- just select them in the Limits tab. But she also wants to track any values that are 20% over/under target. My main chart will be a target of 100 with a plus/minus 10% error but for this 20% error, is it best to just create a separate control chart and give it a new title or can you select the component again and add this further 20% limit? I cant imagine that would all go in the graph together?