After Rating, you know where the group is aligned. If there is disagreement on certain items, this may be nothing to worry about - or you may want to pause and spend some time on why opinions differ.
Groups can rate any list of items on multiple criteria; for instance, effectiveness, feasibility and cost. Such multi-criteria rating can occur by separate Rating sheets for each criterion or with a Multi-criteria rating sheet.
Anomymity. Most rating should be with full anonymity, simply to get the most honest assessment.
Rating by team. Sometimes it makes sense to let participants pick a team before they submit their rating sheets, so you can analyze the results by team. Personal anonymity remains assured.