User Manager Event: multi-company ['|', ('company_id', '=', False), ('company_id', 'child_of', [user.company_id.id]), ] Event/Registration: multi-company ['|', ('company_id', '=', False), ('company_id', 'child_of', [user.company_id.id]), ] Event/Registration: Portal ['|', ('email', '=', user.partner_id.email), ('partner_id', '=', user.partner_id.id)]