Many collections feature recorded 16th note and triplets repetitions. These have been recorded at multiple tempos and are played in perfect sync to your host tempo by the script. By default, the script conforms to the host tempo. If you want to adjust the tempo yourself, set the tempo switch to manual (see Tempo Options) and use the BPM slider to set the tempo.
Please note that the samples are time-stretched using Kontakt‘s TimeMachine. With extreme tempo settings you might hear artefacts cause by the time stretching algorithm. If this happens, try half or double tempo repetitions.