Root Access is Required. You cannot access it from WHM Reseller Account.
Do you wish to disable cpanel account features that cannot be overridden by another feature list so your client/reseller cannot enable that feature?
1. Login to your WHM Account.
2. Go to Packages >> Feature Manager or type Feature Manager in search box and then the option will appear. Click on it.
3. Under Manage feature list, Choose the Disabled option from the Drop-down menu.
4. To disable any feature, tick mark the options you wish to disable and then click on the Save button.
Now, your selected features cannot be enabled or overridden by other feature lists.