Does this add-on creates any new custom groups or properties on HubSpot ?

Yes, the Deal Per add-on creates custom groups and properties on HubSpot. The add-on creates the following two custom groups:

• Analytics Details, having 6 properties

• Products Details, having 3 properties
  
  

The add-on creates the following 9 custom properties:

1. Deal Creation Month
2. Deal Line Items Count
3. Deal Products
4. Deal Products Categories
5. Deal Products SKUs
6. Deal Savings Amount
7. Deal Subtotal Amount
8. Deal Tax Amount
9. Deal Tax Included