User groups for a context. user_group_id context_id role_id User Group-specific settings user_group_idlocalesetting_name User group assignments (mapping of user to user groups) user_group_id user_id user_group_iduser_id User groups assignments to stages in the workflow context_id user_group_id stage_id context_iduser_group_idstage_id Stage Assignments submission_iduser_group_iduser_id submission_id user_group_id user_id