If you calculate in one and the same way your listings Net and Owner revenues you can use the Formulas option on a General level.
If you calculate your Net and Owner revenues differently for one more listings, like for example, you have a different commission for one of more listings you need to use the formulas on Listing level.
Tip: Don't add formulas in both two options for reservations that are from one the same Reservation source. Add the formulas only on one level.
On a General level :
1. Go to Settings page from the left side menu.
2. Click on Formulas tab.
3. Select the desired Reservation source for which you want to add Net and Owner revenue formulas.
4. Save Changes
5. In few minutes in each reservation Net and Owner revenues values will changed based on the added formulas.
On Listing level :
1. Go to Listing page.
2. Click on Settigs tab.
3. Then click on Formulas tab.
Example formulas :
Net revenue : {{revenue}}-{{tax_amount}}-{{cleaning_fee}}
Owner revenue : 0.9*{{revenue}}-{{tax_amount}}-{{cleaning_fee}} - with 10% commission of the revenue.