(Sales Cloud)How to associate a product group with another product group using Import Management

Hi experts,

I recently did an import of many product groups using the new Import Management, but now, I need to associate these products in such a way that a hierarchy similar to this is created:

For example:

Exist:

Product Group A , Product Group B , Product Group C

I need to create a template that allows me to associate and create this hierarchy:

• Product Group A
  • Product Group B
    • Product Group C

Please, could you provide me the columns I should use to create this relationship?

My template used for the import contained the following columns:

Name, Display Name, Reference Number, Allow selection