Space saving manual shelf management system

A bottom supporting shelf allocation and management system for allocating shelf space among rows of products, the system comprising:

• a plurality of adjacent shelf allocating and managing units, each shelf allocating and managing unit associated with at least one row of products, wherein each shelf allocating and managing unit includes:
• a base substantially corresponding in length to a depth of a shelf, where the base is adapted to rest on the shelf and to support the at least one row of products, wherein the base is width adjustable including two adjustable base sections, wherein the two adjustable base sections are coupled to a first width adjusting mechanism at a front end of each adjustable base section located in a first direction along the length of the base and to a second width adjusting mechanism at a rear end of each adjustable base section located in a second direction along the length of the base, whereby the first width adjusting mechanism extends beyond the front end of each adjustable base section in the first direction and the second width adjusting mechanism extends beyond the rear end of each adjustable base section in the second direction,
• a manually movable side divider coupled to an elevating rail attached to a side edge of the base and extending vertically above the base, wherein the manually movable side divider is removeably coupled to the elevating rail through a coupling of the manually movable side divider and the elevating rail and where the coupling of the manually movable side divider and the elevating rail holds the manually movable side divider and the base in a fixed lateral and vertical position but enables the manually movable side divider to manually slide forward and backward along the length of the base while the base remains stationary,
• a backstop attached to a rear of the manually movable side divider and protruding laterally across the base which is configured, when the manually movable side divider is manually drawn forward, to make contact with a rearmost product resting on a product supporting surface of the base and will push the products on the product supporting surface of the base forward as the side divider is manually drawn forward.