As an Administrator you can create Contracts. If you want to set up a price contract, the best place to start is the product register.
Go to Registers - Products
Select all the products that should be part of the Contract (you can add or change them directly in the Contract later)
Select Create contract
Give the contract a name and fill in the relevant information
Create the contract and add a default invoice customer if you want one;
Select the products that should carry a discount - select Use percentage discount
Enter the correct discount and choose the rounding - select Apply discount
The contract prices are updated with the prices from the contract
You can add one or more products, or whole product groups
To adjust or delete one, click the product
The whole contract can be deleted by choosing the 3 dots in the top right-hand corner - Delete contract
How to use a contract on a job
Pick the right customer contract on the job under Contract info
Create the order and the contract customer is suggested as the customer - select it
When you now add product lines, the prices from the Contract appear at the top with the discounted prices.
The discount is not shown on the Order or the Invoice.