To clarify a bit further:
Average power limiters can be enabled or disabled from the front panel, but there is another setting some users may want to modify.
The average power limiter calculates power based on a nominal impedance setting that is configured in IQWic. On the "load monitoring" tab, set the nominal impedance to match the connected load. The average power limiter will then limit based on this value.
The peak voltage limiter can be fully configured from the front panel of I-Tech, and is another way to protect drivers when necessary.