Confluence Collaborative Editing, also known as Concurrent Editing, allows multiple users to edit the same content at the same time. 

This feature was introduced in Confluence 6.0 and can be turned on or off at the site level. 

Collaborative Editing has limited functionality in a Brikit Theme Press environment, though it will work when:

• a page has only one block
• editing in 'Edit Entire Page' mode (this mode is intended only for debugging and administrative actions) 

Due to above, we advise against enabling Collaborative Editing in an environment where Brikit Theme Press is deployed.