I visited the TeamSnap site.
It is a great site for managing sports teams. I liked every aspect of the site, it is so easy to shift between pages and update the information as you need to.
There is no installation required, so as long as everyone in the 'team' checks the schedule before events happen there should be no reason for anyone not to know exactly what is happening.
One of the categories could be useful for staff in libraries - e.g. Co-ordinate bringing drinks and refreshments for........