Teamup is a free shared calendar for groups.  It simplifies how groups share plans, organize events, schedule jobs, and communicate statuses. Color-code sub-calendars for team members, jobs, bookable resources, and any categories of events. A Teamup Calendar can be centrally managed and easily shared with 9 levels of granular access control.  The Teamup for Slack app will post notifications to the connected Slack channel when changes occur on your Teamup Calendar.  No more emails.  Stay up to date with your team calendar all on Slack.