Dynojet 250i max rpm control

I'm very new to the dyno world so hopefully my question makes since. Ive been doing research on how to set a max rpm so im not hitting the rev limiter when doing a hp run. With in dynojet power core, In the support files it talkes of a max load but it doesn't exist in the program. Alternatively I could see turning on the load and have it set to my max rpm. Or am I just over thinking this.