Viewing tasks on the Wrike calendar

My team would like to use Wrike to plot tasks and projects on a calendar that we can all see within Wrike. I'm currently using a free trial and am trying to test how this would work - I've set up 'test' projects with start and end dates - I've then gone to calendars and tried to add the project to the calendar both with and without filters and they aren't showing.

Would someone be able to assist me with this. Since this is the feature my team is most keen to use and we would like to test it out before subscribing.

Thanks