Granting rights to entity for group
Go to [Menu] > [Configuration] > [Users] > [Selected group] > container [Grants] (or [Configuration] > [Entities] > [Selected entity] > container [Groups grants]).
Click the button [Add …] in tabular form.
Fill in the fields: “Entity” (or “Group”), “Grants”.
Click the button [Create] to add an entry or the button [Cancel] to exit the add mode without saving data.
See the instructional video for details: