
Explanation:

Box 1: View
Box 2: Quick Create
With quick create forms, your app can have a streamlined data entry experience with full support for logic defined by form scripts and business rules.
By default only these system tables have quick create forms: account, campaign response, 1case, competitor, contact, lead, opportunity.
Reference:
https://docs.microsoft.com/en-us/powerapps/developer/model-driven-apps/customize-entity-views
https://docs.microsoft.com/en-us/powerapps/maker/model-driven-apps/create-edit-quick-create-forms