Simply go to the Main Menu on WealthCharts, find WealthScript, and load it onto your layout.
Paste this into WealthScript:
[PlotStyle(1, Columns, 42)]
input Futures(false)
if Time == 2200 and Futures then
plot1(low, "Start of Day", White)
elseif Time == 930 and not Futures then
plot1(low, "Start of Day", White)
end
After that, save your WealthScript and then Compile it. Afterward, your indicator can be applied to your charts!