Add subproject. How?

[bogong]

Hello all!
I've got on MacOS this issue on Qt Quick project that created from scratch:

How could I create new subproject? Is it bug related to this QTCREATORBUG-13975 or I am missing something?

[bogong]

The cause of troubles found :

TEMPLATE = subdirs

For defining projects with ability to add subprojects need to create first.

And inside of it add Qt Quick projects or whatever you want.