Saves an alert so the bot tells you when a matching group is posted on this server. Every option is optional; with none set you are alerted for any new listing here. If Group Finder is switched off for the server the reply is Not enabled.
game, activity, region and platform are stored in lower case and matched as whole words or exact values against the listing, so us does not match Russia. A listing only matches when every filter you set is satisfied. Your own listings never trigger your alerts.
delivery is DM (default), Channel, or Digest. Channel alerts are posted in the server's Alert channel and ping only you. If the server has no alert channel, the confirmation warns straight away that channel alerts will not deliver until an admin sets one on the dashboard's Settings page. Digest alerts are collected and sent as one DM at most once per hour, up to 25 listings per digest.
quiet_start and quiet_end are hours of the day in UTC, 0 to 23. Values outside that range count as unset, and the quiet window only applies when both are set and different. DM and channel alerts inside the window are dropped, not delayed; a digest waits until the window ends. DM and channel delivery is also capped at five alerts per hour per person.
The reply is a private card titled Alert subscription created with the delivery and filters, and a footer with the first characters of the subscription ID for /group-alerts remove. The subscription only covers listings created on the server where you ran the command. Alerts fire for /group create, /group quick and the next run of a repeating group, not for relists or bumps.