Description: There is currently an issue with Team Calendars where two users can edit the same event at the same time with different information, resulting in one user's changes being overwritten without any warning. This can cause critical data loss and confusion, especially in team environments where accurate scheduling is crucial.

Proposed Solution: To prevent this issue, implement a mechanism that restricts simultaneous edits to the same event. Specifically:

1. If one user opens an event for editing, lock the event for other users until the first user saves or cancels their changes.

1. If another user attempts to edit the same event while it’s locked, display a clear message indicating that the event is currently being edited by someone else.

1. If two users manage to open the same event simultaneously, and one saves their changes first, the "Save" or "OK" button for the second user should be disabled or grayed out to prevent overwriting. Additionally, the second user should be prompted to refresh the event to view the most up-to-date information.

1. Or, allow users to collaborate on editing similar to Confluence pages.

Why This Is Important: This feature is critical to maintaining data integrity and ensuring teams do not lose important information due to simultaneous edits. It will also improve collaboration and reduce confusion for users working on shared calendars.