Explanation:

Box 1: Functions
most functions and services that are stateless and do not have side effects.
Box 2: Actions
Actions can have side effects.
Box 3: Complex types
Reference:
https://docs.microsoft.com/en-us/powerapps/developer/common-data-service/webapi/use-web-api-actions

Explanation:

Step 1: Edit the Project main form. Select Save as..
Step 2: Create a new model-driven app. Add the project entity, and select the Finance form.
Step 3: Enable security roles and select the Finance Security role on the Finance Assign security roles to the main form. Use this to make a main form available to specific groups.
Step 4: In the Maker portal, share the Finance app and select the Finance Security role.
Sharing a model-driven app involves two primary steps. First, associate a one or more security role(s) with the app then assign the security role(s) to users.
* Visit https://make.powerapps.com
* Select a model-driven app and click Share.
* Select the app then choose a security role from the list.
Reference:
https://docs.microsoft.com/dynamics365/customer-engagement/admin/assign-security-roles-for

Explanation:

https://learn.microsoft.com/en-us/power-apps/maker/canvas-apps/working-with-test-studio

Explanation: