A more thorough explanation:

Term: supplendo vices
Definition: Supplendo vices is a Latin term used in law to mean "by supplying the place." It refers to the act of taking over someone else's duties or responsibilities when they are unable to fulfill them.
Examples: When a teacher is absent, a substitute teacher is brought in to supplendo vices and teach the class. Similarly, when a CEO is on vacation, another executive may be appointed to supplendo vices and make important decisions in their absence.
Explanation: In both examples, someone is stepping in to take over the responsibilities of another person who is unable to fulfill them. This is the essence of supplendo vices - filling in the gap left by someone else's absence or inability to perform their duties.