This is a simple OAP file that can be installed. As it uses only standard Outsystems functionality there should be no limit
A simple process with two human activities
The main screen, with the button to start a workflow (there is only 1 example case that is always selected.
An inbox list that shows all tasks for the logged-on user (both by user and all groups that is in.
And a list with all cases
The review screen (approval is the same) that gives the ability to accept (open) the activity. This will remove it from all the inboxes of the other users in the group and make a decision about the review.
This is the action that sets the activity to a group. In the on Ready it will just before th activity is exposed set it to a group with the systems action.