Thank you for the reply Angie.  Getting the group to agree ground rules would be a good way of reminding people of what the group agreed.  I am thinking that it would be good for groups to discuss things that could happen during the sessions as part of group rules, for example a child wondering/not participating/on sitting the way a parent would like etc. The group deciding appropriate parenting methods.  My only concern would be how time consuming this could be, it could be a session in on its own so not as appropriate for short delivery.