An invite link is a link that you create and use to invite someone to a specific server.
Creating an Invite Link[]
Keep in mind that, whatever channel you are in, the channel you are in will be where the invite link sends the person who clicks the link.
To create and invite link on PC, go to the top left side of your screen while in the server you want to invite someone to. Click the title of the server. Then, the second bar should say "Invite People". Click that, and create the link!
Changing the Expiration Time or Number of Uses[]
To change the expiration time or the number of uses, do the same steps as creating the link, but go to the bottom and click "Edit invite link". Then, there should pop up a menu that allows you to change these things.
Custom Invite Links[]
Servers can unlock the personalized invitation link functionality from boost level 3 (server boosted 14 times).
Once this perk is unlocked, people with "Manage Server" permission can change it in Server Settings > Custom Invite Link.
Server Setting > Custom Invite Link
Be careful, if the server loses the boost level, they also lose the invitation link. However, another server will not be able to steal it for a while.