We have an OpenERP instance set up but there is some tweaking to do still.

The most important one is that our salespersons have access to modify the product's base sales price and we need to prevent this from happening.

I can see the Users section on the left and see each user. That particular user appears as:

Sales Management: Manager

Project Management: Manager

Warehouse Management: User

Accounting Finance: Accountant

Purchase Requisition: Manager

Purchase Management: Manager

Human Resources: Employee

Administration: Access Rights

Which needs to be eliminated of modified such that the salespersons are not able to modify Base Sales Prices?