Settings — Project: Project views
Enabling project grouping
If a project contains multiple files, you can enable automatic project grouping.
Go to Configuration > Settings > Projects > Project views.
Select Show Grouping when project has more that X files.
Select Save.
When the number of files exceeds a defined limit then the grouping tab automatically appears in the Project Editor.
Show Language view when single project has more than X files
If you have a single language project with many files you can also manage the project at a language level rather than at a file level. The number of files in a project when this is visible is set in a similar way.
Go to Configuration > Settings > Projects > Project views.
Select Show Language view when single project has more than X files.
Select Save.