This is their 'physical predetermination': physical as opposed to moral causality
This is what they call predetermination, and they also call it physical, not in the sense in which the physical, meaning the natural, is opposed to the supernatural, but in the sense in which the physical is opposed to the moral.
They hold that God predetermines created wills to act not merely by presenting an object, urging and attracting, which is what a moral cause does, but by moving the will itself directly and exerting on it a true, real action in the proper sense, which is what belongs to a cause called physical.
Latin
XVII. Et haec est quae ab ipsis dicitur Praedeterminatio, quam etiam Physicam appellant, non prout Physicum, id est, naturale opponitur Supernaturali, sed prout Physicum opponitur Morali. Nimirum volunt Deum Voluntates creatas ad agendum praedeterminare, non simpliciter objectum proponendo, suadendo, alliciendo, quae sunt Causae Moralis propria; sed immediate ipsam Voluntatem movendo, & actionem veram, realem & proprie dictam in eam exercendo, quod est proprium causae quae Physica vocatur.