Keltner channel

I’ve been testing the various keltner channels provided by the community here. The material I’ve read about how to use the keltner channel use this following calculation.

Keltner Channels in which the centerline is
SMA(period) and the upper and lower channel lines are offset up and down by the following
amount: (offset multiplier x SMA (H-L, period)) .
This has a nice smoothing effect on the channel and allows me to see a better price flow with in it. Anyone able to modify the preexisting keltner tools here to calculate based on this? Thank you