Some longer poses from the same workshop.
These all lasted between 30 and 40 minutes. I can't remember which are which now, possibly because this timespan feels pretty similar when you are drawing.
Typically a model works along one wall of a room and the artists set up their equipment in a semi-circle facing them.
This workshop gets fairly full and there are two rows: people on chairs with small sketchbooks in front and people standing up at easels behind them.
I usually stand - you see more, and it prevents my work getting too tiny and precious.
This workshop runs in four main sessions over a weekend day, with a set of short poses or a couple of longer ones in each session, with tea-breaks or lunch in between.