A new time trigger (like ‘3 hours after Rule Trigger Date’ which is part of...

If the workflow rule is active

If any time-based workflow action is pending to be executed on any of the existing time triggers of that workflow rule (like say any field update workflow action pending of time trigger

‘1 Hour After Rule Trigger Date’). So deactivating t his workflow rule will not suffice. Deleting the record (if feasible) on which time-based workflow action is pending will make ‘Add Time Trigger’ button active again. c. If the workflow rule is to be executed