I'm fitting a kitchen and would like to know if i put the waste pipe coming through the back towards the bottom middle of the unit, can I make the remainder up to the sink fit or does it have to be in a specific place. Thanks.
Whatever works with regards to getting a reasonable fall for water flow and making best use of space in the cabinet. Sometimes there is little or no room for adjustment, other times, its a blank canvas.
Spot on. And sometimes using a adjustable P trap can be beneficial. https://www.screwfix.com/p/mcalpine-adjustable-inlet-tubular-p-trap-white-40mm/46577