Commerce : how do you manage tax groups and rules?

I’m working on my first Commerce website and I don’t know exactly how to set up / use tax group and rules.
Customers are mainly in EU and I installed the VAT EU module to pick up tax rates.

But I don’t know excalty :

  • How to configure the module
  • How to set up tax rates (standard and reduced) and allow to choose between twice in back end ?

should I choose this way:

  • Group for standard
    – priority 1: UE VAT Tax Rule for countries = UE applied_rate: standard
    – Other tax rules based based on country
  • Group for reduced
    – priority 1: UE VAT Tax Rule for countries = UE applied_rate: reduced
    – Other tax rules based based on country

Then choose the right Tax group on product page TV ?

Modmore also has its own forum for their premium extras. Maybe you can find an answer there.