I have a product catalog site , in which a user can advertise an item for sale, edit the item and delete. I couldn't find a suitable permission group to add the users, since they should be able to add,edit or delete an list item
Members cant be used since it members have permission to edit the site Visitors cant be used since they don't have rights to add an item
Should i create my own permission level/people group ? How do i do that ?