I assume you're talking about the cyan "bug" on the torque gauge... That is the "cruise torque bug" (as per Garmin G1000 pilots guide for Cessna Caravan...
It "represents the recommended cruise torque settings (appears for certain combinations of propeller speed, outside air temperature, airspeed, and altitude)"
That isn't a "limit" as such... And isn't really applicable to the climb as far as I'm aware...
For climb... You set whatever you want without exceeding 765C (or your companies SOP limit. We use 740
or 101.6% Ng