This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
Consent, or permission, was the act of permitting an individual to do something.
In 2254, Lieutenant Una asked for permission from Captain Christopher Pike for sending scouting and scientific parties to the surface of Talos IV. Pike gave his consent, saying "Affirmative on the request". (TOS: "The Cage")
In the 31st century, feeling the new technology might be too dangerous, scientists requested permission from the Federation to shutter the experimental program SB-19. The Federation, believing the program offered the best alternative to their current dilithium crisis, replied in the negative. (DIS: "Unification III")