Hello, 

I work for a consultant company and we use Odoo V11 community.

I need an help, how to set up this scenario.

I have a customer who pays the first 4 days of consulting 500eur/day and after that he pays 450eur per day. This discount (10%) is applicable if the customer overcome the 4 days during the month. The month after it start again with 500eur/day and so on. 

Usually I manage all my products with project and timesheet, so I can have the right invoice depending of the hours we spend working for the customer, but in this case I am not able to set the right configuration. 

Thank you for your help.