Please read the following sentence:
Determine the mechanism by which the elements occupying the system interact with one another.
Is occupying grammatically correct in this context? Should that occupy be used instead?
Please read the following sentence:
Determine the mechanism by which the elements occupying the system interact with one another.
Is occupying grammatically correct in this context? Should that occupy be used instead?
Your sentence is correct.
An alternative would be: "Determine the mechanism by which the elements that occupy the system interact with one another."