The categories that you'll find in this module are imported from your data source.
Within EffectConnect you can find and view your categories by going in the left menu to 'catalog > categories'. In this overview, you'll find your categories that are related to your products.
This module only shows which categories are imported to EffectConnect. You cannot apply changes to the categories throughout this module. If you would like to apply changes, like disabling products or changing prices for export towards a marketplace, you can use product selections to specify which actions need to happen in which category.
For example: create a product selection that has a condition like, 'collection contains not: category X'. Only the products that aren't linked to 'category X' will remain.