A standard object can be a child object in a
Multi select picklist can be dependant field only and not a controlling field.
Organization wide default (OWD) is the first check used for determining access to records a user does not own.
A new time trigger (like ‘3 hours after Rule Trigger Date’ which is part of ‘Time-Dependant Workflow Actions’) cannot be added to a workflow rule under which cases using the ‘Add Time Trigger’ button?