Where is @counter_limit configured?

Good afternoon.
Our enterprise uses Observium 21.10.11678

We added several printers to monitoring HP, kyocera, Xerox, Konica.

But there is no parameter setting in any printer @counter_limit, @counter_limit_low, @counter_warn, @counter_warn_low

Unfortunately, I can only use the web interface

Where in the graphical interface can I set these parameters?