Hi Jasmin/Carmen
I haven't tried this lately, but I believe that a copy of the form data is made at the time that the form is assigned in the User>AssignTask step. This means that even though the form data is shared within the process, each of the users in the gateway will see their own "version" of the data.
I don't believe that there is any way of having one user's "completion" automatically update another user's version of the data.
You can imagine how confusing this could be, particularly if the second user was currently working on the form, or had saved a draft copy of the form.
I'd recommend having each user complete teh form serially.
howard
http://www.avoka.com