The chart below will trigger an alert (corkpop sound) when price breaks outside of the IBH or IBL for the first time after the initial balance is formed (first 60 minutes of the day session).  These IBH/IBL lines and the Signal Markers will work on both day session and full session charts, as well as any periodicity.  The yellow highlighted PaintBackground highlights the IB period.

Chart Definition: https://www.linnsoft.com/charts/cp-initbalalerts-es