To Add Users or Groups to ExistingPermissions List on a registry hive
Start registry editor regedit
Click the key that you want to change the Permissions listfor.
On the Edit menu, click Permissions, and then click Add.
In the Locations box of the Select Users, Computers, or Groupsdialog box, click the computer or domain of the users and groupsthat you want to choose from.
Click the name of the user or group, click Add, and then clickOK
How to do it
list steps
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