Hi. A number of people on our team have been enabling the Wrike/slack integrations and when the Wrike bot posts in the Wrike app section for the first time with the list of how-tos, one of the items listed is a beta meeting launch that no longer exists and should probably be removed from the list. Thanks!
From the post:
*[Beta] Launch Wrike Meeting*
Use `/wrikemeet <Meeting title>` to start a new Wrike Meeting right from Slack. This command will create a new Wrike Meeting and post a URL to it that anyone in your team can use. This feature is still in Beta. If you don't have Wrike Meetings enabled yet, you'll be prompted to do so once you use this command.