These materials accompany the ACT for Depression and Anxiety Group developed by Matt Boone at Cornell University's Counseling and Psychological Services. It is a 10 session college counseling center group which combines didactic elements, mindfulness exercises, experiential exercises, group discussion/process, and homework (called LIFE Exercises).
This protocol materials can be found at: https://contextualscience.org/act_for_depression_and_anxiety_group_cornell_unive