This script plots the high/low of any custom session and extends it until the daily close. It does not show on the timeframe higher than the length of custom opening session by default.
The time period of opening range & the max timeframe to display it on can be adjusted from the settings.
So for eg. if want to use 5m ORB to trade, then set "ORB total time" as 5min & "Session Time" as whatever is the opening 5mins time period of ticker that are trading.