To Add Users or Groups to Existing Permissions List on a registry hive

Start registry editor regedit

Click the key that you want to change the Permissions list for.

On the Edit menu, click Permissions, and then click Add.

In the Locations box of the Select Users, Computers, or Groups dialog box, click the computer or domain of the users and groups that you want to choose from.

Click the name of the user or group, click Add, and then click OK

How to do it

list steps