We do not pay guild members to teach. It is considered a service to the group. Our leader often will suggest someone teach a technique to the group but there is not restriction on who teachers. Most who "teach" will do a 10 - 15 minute tutorial rather than a full meeting of instruction or lead a retreat session. We try to keep it casual and low pressure for guild members who may not be comfortable with the "teaching" role but who have good skills or ideas to share.