Create folders under a project using Visual Studio aka BIDS
Using BIDS any user cannot create folders under the project like VS2005 does. As usual user can create more than one query folder, and the root folder can create child folders. The only way to recover this problem is to edit the XML file that is created on the project:
Edit the .ssmssqlproj using notepad or some sort of text editor
Copy one of the existing file folder elements, give it the name you want and a unique type.
<LogicalFolder Name="Miscellaneous" Type="3">
<Items />
</LogicalFolder>
-- copied to --
<LogicalFolder Name="Miscellaneous2" Type="4">
<Items />
</LogicalFolder>
Save the edited text.
Open the solution
This should get a new folder on the project and also ensure to check by refreshing under BIDS.