A pointing list is a list that only internal residents can sign up for. If you are an internal resident and there is a pointing list in your association/rental property, you can sign up for the pointing list.
The pointing list works such that you can “point” to a buyer/tenant if you are offered to buy/rent a property. You can point to anyone unless otherwise specified in the association’s/rental property’s regulations. For example, it could be a family member or a friend. The person you point to can thus buy/rent the property via your pointing list sign-up.