I would like to profile ES including custom sessions. I have created an Asian session (8pm till 3am EST) and London session (3am till 9:30am). I would like to create buttons that automatically add or remove the profile for the custom Asian and London sessions.

This is the chart I am working with: https://www.linnsoft.com/charts/sp-intraday-combined-es

I would just like to be able to toggle on and off profiles where the vertical reference lines start.