To add approval you have to:

1. Go to the Agreements category in the Configurations tab
2. Select the option "Add new agreement" at the top of the page
3. Choose client types 
4. Choose one of four agreement types
5. Fill in the required data
6. Confirm the agreement by pressing "Create"

NOTE: For the type Regulations, Electronic Invoices and Marketing
Only one agreement of a given type may be available at a time. In case of
Activation of prior agreement will automatically be deactivated!