We have the UI for new product chooser with 4 columns: Connector, Category, Product and Preview like this.

We can hide the columns for the product chooser by configuring in new-product-chooser.yaml.

e.g. /ecommerce-templating/dialogs/components/new-category-list.yaml 

By default, enableCategorySelection and enableProductSelection are always true. We don't need to configure them in yaml.
CF: ECOMMERCE-416 Rename enabledCategoryView > enableCategorySelection, enabledProductView > enableProductSelection.
+ If enableProductSelection is false then Product and Preview columns in UI are disabled. 

+ If enableCategorySelection is false then Category, Product and Preview columns are disabled. ( Because Product column is depended on category column, so if enableCategorySelection is false then don't care enableProductSelection is true or false)

+ If having only one connection which is enabled or configure definitionName/connectionName in yaml then Connector column is disabled.

+ If configuring wrong definitionName/connectionName in yaml then check if have only one connection then Connector column is disabled.

+ If configuring wrong definitionName/connectionName in yaml then check if have more one connection then Connector column is displayed as normal.

+ If having only one connection which is enabled or configure definitionName/connectionName in yaml and enableCategorySelection is false then don't disable Connector column. ( to prevent the empty dialog)