Going one step further, if you put on an MA MTF with the same settings (14 shift 2) and "First higher TF" and another one with "Second higher TF" you can follow higher TFS on the lower TF chart. Here the example chart is a 1m chart where you can easily follow the 14 MA cross on the 5m and 15m chart. If you trade the 1H chart it would show the 4H and D1 too. Hard to go wrong with that. It's not rocket science, just keeping it simply and convenient. Actually there is no need for a subwindow.
Maybe this helps less experienced traders not to lose sight of the bigger picture. Have fun.


Here's a TPL for convenience