To add to a Footprint chart do the following:

1. Right click on a Footprint chart and select Preferences.
2. Set the Filter Volume to the value you desire. 
3. A value of 999 will filter trades out of fewer than 999 shares/contracts so that you will only see the larger trades.
   

To add an institutional volume filter to a traditional chart do the following:

1. Open a traditional chart.
2. Add the technical indicator called Volume Breakdown. (How to do this)
3. Check off the box "consider only trades with volume" and set the value.