When I went to add a custom field to my portfolio this afternoon - I came across a new option for ‘Roll Up’!
Any number field inside your project - including actual hours or cost for example can now be used to roll up to the portfolio level
So therefore if your tasks in your project have hours associated - Asana will now add them up and total them for you at the portfolio level automatically. (Providing you have added this number field to your library.)
So much love for this feature - if you don’t have it yet - keep your eye out for it soon!
Danni @ GenD