Sales Module Settings on Client Account

What needs to be done for correct calculation before the first invoicing

1. Define invoicing procedure for advertiser/site 
2. Define sales procedure for advertiser
3. Define sales procedure for site
4. Set VAT value
5. Set price/commission for sites
       or
       Set price for channels
6. Set Company sales information - agency commission, terms of payment... 

Now you can continue by setting financial information for a campaign and campaign invoicing.