A great way to collaborate and provide visibility across teams is to utilize Circa's event calendar feature to publish and share customized event lists.
Your admin or team lead will share a link or may imbed a cal on an internal site where you will have the opportunity to view and interact as permissions allow. 

Once you click on the link you will see the published calendar & be able to view as a list, calendar or map.

You also have the option to filter & view list by select teams, dates, leaders, locations, etc.