To manage giveaways you need one of the giveaway roles set in the dashboard or the "Manage Guild" permission.
Interactive giveaway setup.
Button under the giveaway
giveaway reroll <message ID>
This will pick one or the configured amount of winners again after a giveaway has ended. Users can win multiple times.
giveway end <message ID>
giveway delete <message ID>
Change the text of the giveaway message. Can be used for e.g. pinging a giveaway role.
Role for creating/managing giveaways
Users with this role can create, edit and delete giveaways.
Roles which always can participate
Users with this role can always participate in giveaways, ignoring any requirements that have been set when creating the giveaway.
You can add different requirements for participating in a giveaway.
roles: Requires all of these roles for participating
anyRoles: Requires any of these roles for participating
notRoles: The user must not have any roles to be able to participate
minAge: The account of the user must be at least this time old
minAge:1 week 2 days
minMemberAge: The user must be on the server for this time
minLeaderboardPoints: The user must have at least this amount of leaderboard points. Depending on the level cooldown setting one point corresponds to one or two messages.