Restrict Some Pages And Features To A Test Group?

[size=4][font=arial,helvetica,sans-serif]Hi, I am new to the community and I have some questions regarding the access permissions to a few pages and features.[/font][/size]

[size=4][font=arial,helvetica,sans-serif]For example, I would like to enable my store to use two currencies and it would be visible to the client, however I would not want them to see at first, I would like to make some customizations before. ;) [/font][/size]

[size=4][font=arial,helvetica,sans-serif]I’ve seen that has a feature to enable more than one currency at the same time, however all customers would see it. Is there any practical way to restrict a specific group or would I have to change access permission variables in controllers? :confused: I[color=#212121]n short, I would like to have a test group before posting changes for customers. Any tips? [/color][/font][/size]

[color=#212121][font=arial, helvetica, sans-serif]Thanks [/font][/color][font=arial, helvetica, sans-serif][color=#212121] :-)[/color][/font]

No tips? :(