online group pricing vs group pricing per item working with sale maker

I had group pricing per item installed and working fine. I chose this one because instead of a discount percentage I could add pricing to each item as I use a markup vs discount.

Problem: When using salemaker it discounted the group pricing - double discounting - which is not good because it prices items below my cost.

Solution: I deleted group pricing per item and installed online group pricing

New Problem: I don't see a way to use markup per item vs discount percent.

I don't know how to code but can modify whatever someone tells me to.

I am using zen cart v. 1.3.9h

When I first installed the online group pricing I still had the group pricing per item installed and they didn't seem to be working together as my product info pages were blank. Is there a way to get these two add-ons to work together?

Not all of my products have the same mark-up so a "cross the board" discount does not work for me when dealing with wholesale pricing issues.

The current version of Group Pricing per item (v1.3.3) is not directly compatible with Zencart version 1.3.9. It is advertised as suitable for Zencart v1.3.8.... and it is.

You should not simply copy the add-on files over your Zencart 1.3.9 files as the add-on files are based on v.1.3.8 and you will disrupt some of the improvements provided with 1.3.9. It is necessary to merge the code in order to get this to work properly with Zencart 1.3.9.