Overview
This allows differ Customer Groups to have Price Grids and Pricing Coefficients that only apply to them and the variation from standard is not a percentage.
Add Price Group
Settings > Sales Settings >Price Groups > + New Group
Attach to customer group
These are setup and attached the the customer group
Add Price
When your pricing is then export you will have the individual price groups (like the example below group 1 & 2) you can import separate pricing for each group