You can add forms to starred when you have access to the project and open it from there.
But when you don’t open a form in this way (when you don’t have access to the project, or just get the link) you don’t get that option, as forms open in the browser by default, disregarding the preference of where to open Asana links.
The only way I know to save a for in Starred for which I don’t have project accesss is through the Forms widget. But it only appears there after having filled in the form.
I think it would really help launching a new workflow if we could share “our department is using this form now instead of email, here is how to save it as favourite” without asking a form will be filled in first.
Or am I missing something? At the least, it doesn’t seam intuitive.
Also, this widget seems to be using the “old” language and refers to Starred as favourites.