@hello123starb
Not sure to exactly understand what you want.
Do yo want to draw a support line on the RSI every time it goes below 30, and vice-versa ? A showing pic would be good.
You can draw a line on the RSI : Capture d’écran (646).png
Also be aware that support-resistance strategies; based on indicators or price; coupled with "confluences" or not, are not reliable.