[Observium] How to give permissions to view a device

Hello,

I want to give access to a specific device to a specific observium user. This user should not see the other devices that are being monitored by observium. I have created the new user as a normal user (level 1). As expected, when I log into observium this user has access to nothing.

My question: where do I configure what devices that this user should have access to? Or where in the device configuration do I configure what users may access the device?

I apologize if the answer to this question is obvious and I missed it while googling. Thanks in advance,

Tobias