How can I restrict or notify a JIRA user trying to modify a page which is already in use

[Sourav Modak]

Suppose an user is trying to modify a page/Jira, which is already in use and held by another user.

[Tarun Sapra]

Hello @Sourav Modak

Here are the details on "Collaborative editing" which you can switch off if you desire so.

https://confluence.atlassian.com/doc/administering-collaborative-editing-858772086.html