This sets the lower bound of the TACACS privilege-level range that maps to the device's SAOS admin role, working together with the RW privilege-level object as the upper bound of that range. Because SAOS privilege levels are derived purely by comparing the level the TACACS server returns against this and the other threshold objects, misconfiguring these boundary values can silently grant a user a lower local privilege level than the TACACS server administrator believes they assigned, without any error being raised. For example, if this is set to 6 and the RW threshold is 10, a user whose TACACS server returns privilege level 8 would land in the admin role on this device.