This command is used to temporarily ban an user from the server.
reason- The reason for the infraction. It will be shown in bot logs
dm-user- Sends the reason for the warning to the user's DMs - can be set to true or false
no-infraction- Does not log an infraction. Log entry is still sent
/tempban <user> <duration> [...reason] [dm-user] [no-infraction]
This command's level is 50 by default. The bot needs Read Messages, Send Messages, Ban Members permissions in order to be able to execute this command.