Check out the videos below. They include several of SADOD’s mini-webinars for peer grief support group facilitators, which cover a number of practical topics.
Study principles and practices such as those found in Lifeline Australia’s practice handbook for support group facilitation. (It focuses on peer support for people bereaved by suicide, but it is a practical and comprehensive guide whose lessons could apply to any grief support group.)
Think about SAMHSA’s Working Definition of Recovery. (It offers 10 guiding principles of recovery, generally focused on mental-health and substance-use issues, which could provide a framework to guide peer grief support.)