Lock and unlock files and folders
Install the Subversion plugin
This functionality relies on the Subversion plugin that should be installed and enabled in your IDE.
Press Ctrl+Alt+S to open the IDE settings and select.
Switch to the Marketplace tab and use the search field to find the Subversion plugin.
Click Install and restart the IDE if prompted.
Though Subversion integration allows you to successfully modify and merge files changed by different team members, sometimes it makes sense to lock files (for example, images) to avoid overwriting changes.
Lock a file
Unlock a file
Select the file you want to unlock, or open it in the editor.
Select VCS | Subversion | Unlock from the main menu, or Subversion | Unlock from the context menu of the selection.
To forcibly break a lock set by somebody else, select the Steal Existing Lock checkbox.