Warehouse dock is a feature of warehouse design - used for unloading and loading vehicles. It is crucial to carefully design where they are externally located in a facility and choose the best type of dock depending on the available space.
In many cases efficient and effective loading and unloading is achieved by a dock design that places the loading and unloading vehicle' rear platform at the same height as the warehouse floor.
Slopes in docking areas must always be as small as possible: the gentler the slope, the less chance of errors and accidents. If a warehouse is going to be used by large volume vehicles, such as high cubes, it may be necessary to install special devices, such as hydraulically adjustable docks or ground level lift platforms.
Current trends indicate that vehicles that are longer and wider and have a greater volume will be increasingly common. Therefore, when planning the location of the docks, it would be useful to ensure that there is a large area for the approach, manoeuvring and build-up of large vehicles.
One option to increase the efficiency of the docks is to combine reception and dispatch into a single area (dual use). This solution drastically reduces costs and, above all, increases the use of handling equipment and personnel. However, if this is justified by the volume of material flows, there can also be separate access points for each function (some for reception and others for dispatch - 'sole use').
Reference:
- Warehouse docking areas - Interlake
- CIPS study guide page 13
LO 1, AC 1.1

A master production schedule (MPS) is a plan for individual commodities to be produced in each time period such as production, staffing, inventory, etc.[1] It is usually linked to manufacturing where the plan indicates when and how much of each product will be demanded.[2] This plan quantifies significant processes, parts, and other resources in order to optimize production, to identify bottlenecks, and to anticipate needs and completed goods. Since a MPS drives much factory activity, its accuracy and viability dramatically affect profitability. Typical MPSs are created by software with user tweaking.

The purposes of a warehouse are to keep the inventories in good condition and to ensure that the operations is smooth. In the scenario, the warehouse has 2 stories, with goods-in and goods-out areas located on the ground floor and a lift connecting the stories. The lift could become a bottleneck if the goods inside the warehouse are not well-arranged.
Since the lift is often small with limited load capacity, putting heavy bulk items on the first floor will cause bottleneck and increase the chance of accidents. Therefore, palletised items (even they have low-usage) should be placed on the ground floor. Smaller and lighter items should be stored on the first floor.
Reference:
LO 1, AC 1.1

JIT, often referred to as the Toyota production system (TPS), originated in Toyota's manufacturing plants in Japan in the early 1970s. It was first introduced by the organisation's owner, Taiichi Ohno. The prime goal of JIT is the achievement of zero inventories.
The just-in-time objectives of eliminating waste can be summarised in the 'five zeros: zero defects, zero set-up times, zero inventories, zero handling and zero lead times.