Starting with CloudPanel 3.2.0302.0 you can now limit visibility and limit access to specific companies and/or resellers.

Limit Visibility

Choose which companies can see this permission group in the dropdown. If you choose a reseller then only the companies under that selected reseller can see this permission group. If you choose specific companies then only those companies can see this permission group.

Limit Access

Choose which companies or resellers this permission group will have access to. Selecting a reseller will result in the user being able to manage all companies under this reseller. If you select individual companies then that user will be able to manage all companies that you have selected.