Multiple Admin accounts

Hi all, I’m trying to set up 2 EX4 devices and need to give 2 users Full admin control over the device. This is possible on other devices such as the Synology Boxes, but could someone advise if it is possible on this device? Else it will need to be only 1 admin account shared among 3 people. (don’t feel to comfortable with this).

At the moment it only supports one admin user.