Discounts percentage can be applied individually against the material item when creating a Quote/Sales.
Or in bulk via price levels:
Set up price levels
Bulk update price levels
Have a look at similar frequently asked questions or visit our FAQs page for more information
How can I track the Tracking Categories in TidyStock?
Shall I clear my own data in the trial when I want to purchase the product?
Why is my .csv file not uploading?
How do I undo a procedure that was accidentally charged out to a patient?
Is it possible to convert a material item into an assembly?