I've noticed that on other mod sites like Nexus and Gamebanana, mod authors are able to state permission terms that denotes what others may or may not do to their mod with or without their permission. In the case of Gamebanana, this goes slightly further by having mods be protected under a CC BY-NC-ND 4.0 license by default unless stated otherwise by the author.

Do 5mods have something similar to this, or is this something that mod authors themselves have to decide by their own?