Looking for module

Hi all

Looking for a custom module for opencart

in Customer Groups i must specify the percentage

What i want
SO
for business-1 price X 1.10_Rounding(up 0,005) = sale price
for business-2 price X 1.20_Rounding(up 0,005) = sale price
for customer group-1 price X 1.40 X 1.21_Rounding(up 0,005) = sale price

Can someone make this

Here is the module:)

https://www.opencart.com/index.php?rout ... n_id=32909