To create a group, follow https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2012-r2-and-2012/jj717247(v=ws.11)
To complete this procedure, you must be a member of the Domain Administrators group, or otherwise be delegated permissions to create new group accounts.
To add a new membership group in Active Directory
- On a computer that has Active Directory management tools installed, click the Start charm, and then click the Active Directory Users and Computers tile.
- In the navigation pane, select the container in which you want to store your group. This is typically the Users container under the domain.
- Click Action, click New, and then click Group.
- In the Group name text box, type the name for your new group. Note Be sure to use a name that clearly indicates its purpose. Check to see if your organization has a naming convention for groups.
- In the Description text box, enter a description of the purpose of this group.
- In the Group scope section, select either Global or Universal, depending on your Active Directory forest structure. If your group must include computers from multiple domains, then select Universal. If all of the members are from the same domain, then select Global.
- In the Group type section, click Security.
- Click OK to save your group.
To add members:
Right-click the group > Properties.
Go to the Members tab and click Add.
Select the users or computers to add.
If the above response helps answer your question, remember to "Accept Answer" so that others in the community facing similar issues can easily find the solution. Your contribution is highly appreciated.
hth
Marcin