What help do you need?
The TCR settings (Set through the M1, 2, and 3 options) are not requirements and only useful if you want to slightly alter how the coil hits at a specific setting, or if you're using a different wire from the standard setting. For example, the RS200 is defaulted to SS316L wire under the SS setting. If you're using SS430L wire you'll want to change your TCR value to get a more accurate temperature compared to the setting on your display.
TCR is essentially a way to recalibrate your
vape to the display. If you find that 450F is too cool you can change the TCR value so that it's warmer with the display still showing 450F.
Here are the recommended TCR values for different wire types:
Personally I'm happy with the defaults for Ni and Ti, but I don't like how the mod performs with SS316L wire so I used SS430 and a TCR setting of 0139 on mine. Seems to be a lot more accurate than it is with 316L wire.