Your network contains an Active Directory domain named contoso.com.
You have a Group Policy object (GPO) named GPO1 that contains several user settings.GPO1 is linked to an organizational unit (OU) named OU1.
The help desk reports that GPO1 applies to only some of the users in OU1.
You open Group Policy Management as shown in the exhibit. (Click the Exhibit button.)

You need to configure GPO1 to apply to all of the users in OU1.
What should you do?（）

Your network contains two Active Directory forests named adatum.com and contoso.com.Both forests contain multiple domains. A two-way trust exists between the forests.
The contoso.com domain contains a domain local security group named Group1. Group1 contains Contoso\user1 and adatum\user1.
You need to ensure that Group1 can only contain users from the contoso.com domain.
Which three actions should you perform?
To answer, move three actions from the list of actions to the answer area and arrange them in the correct order.