Quality of Service can be managed in a network that uses time division access, such as a Passive Optical Network, by supporting provisioning of at least two scheduling precedence levels in the PON, none of the at least two precedence levels being associated with a fixed or assured bandwidth traffic type in the PON, but having a bandwidth precedence andor proportion relationship to each other. The divider spans from the first wall to the second wall when in the engaged position. Each segment is characterized by a position within a base region associated with the image and is encoded according to a corresponding encoding format. This allows the table to be maneuvered onto a support structure already in place.