I have multiple charts with different symbols in each - how can I change the timeframe in all of them at the same time?  Thank you.

There is a T with a small arrow pointing down inside of a box in the upper right of each chart. It is used for Time Frame Linking. If you set these all to the same color (besides grey which is Not Linked), all of the charts with the same color will change Time Frames at the same time. Yellow is special in that it will Listen For any TimeFrame Changes. This means if the Time Frame link is yellow, changing the Time Frame on any chart will change the Time Frame on the yellow chart no matter what color the other chart has for its Time Frame linking.