The Executive Order 14134 establishes a clear line of succession for the Secretary of Agriculture if both the Secretary and Deputy Secretary are unavailable. The order lists specific officials from the Department of Agriculture who would take over the duties in a predetermined sequence, including various Under Secretaries and other department heads. There are limitations, such as the exclusion of individuals serving in an acting capacity from assuming the role, unless eligible. The order also revokes a previous executive order from 2012 on the same matter.
Simple Explanation
The President made a new plan for who will be the "boss" of the Department of Agriculture if the top leaders can't do their job, choosing many people to be next in line, but also reminding that he can change this order if needed.