Inviting new Managers and Viewer members to your workspace doesn't automatically mean they can see or manage your events.
Indeed, Managers and Viewers will not be able to access an event until the administrator authorize them to do so.
To authorize users to manage an event, the administrator must:
Go to the dashboard page, or the event list page
In the event box, click on the "User permissions" button
A pop-up window will open, where you can authorize each single user to manage the event with different permissions.
Managers
No access: the user can not see the event
View Team Attendees: the user can view only their team attendees, and can't edit data
View All Attendees: the user can view all attendees, and can't edit data
Manage Team Attendees: the user can view and edit their team attendees
Viewers
No access: the user can not see the event
Can't print: the user can view all attendees, but can't export data
Can print: the user can view all attendees, and export data