I have a standard project template that I use to generate almost all my projects, and I want to roll-up tasks on a particular project I've just created.  Documentation claims i should be able to roll up a new project after it is created, but there is no 'roll-up' check-box available on either the template itself, nor on a new project created from it, even when there are no dependencies nor work done. 

How can i roll up my projects?