Work out planogram facings instantly with clear inputs, formula shown and shareable results.
Facings must hold enough stock to cover demand between replenishment visits plus a safety allowance, otherwise the shelf empties before the next fill. Increasing replenishment frequency is the alternative to giving a line more space — which is why space and labour trade off directly.
Demand between visits
Demand = Weekly sales / 7 x Days between visits x (1 + Safety %)
Facings
Facings = ceiling(Demand between visits / Units per facing depth)
The line goes out of stock on shelf even though stock exists in the back room, which is the largest single source of lost retail sales.
Up to the point where the shelf covers the replenishment cycle. Beyond that, extra facings only buy visibility, not availability.