This is the format of Sycamore Hill, the current national workshop. The problem is that most of the Milford-format workshops are either too far away or else are filled and have waiting lists. If you're really interested, what you may need to do is start your own. The Milford model works best with between five and seventeen members. Too few and the workshop loses its necessary diversity, too many and the critique of each story drags on to excruciating lengths.
Clarion takes six weeks.
Both Sycamore Hill and Clarion are annual events, while many of the regional workshops meet on a monthly or bimonthly schedule. While the furnishing of the workshop room is a matter of circumstance and taste, the optimal arrangement is for the group to sit around a large table or otherwise gather the wagons into a circle. Each critic holds forth in turn, most referring to notes they've taken. The custom is to pass these notes to the writer at the end of the session. Repetition is inevitable, although wistful sighs and vacant stares can sometimes prod repeaters to pass when they have nothing new to add.