Coolant leak, how to replace the hose that runs from the top of reservoir and the one that runs alongside the front of engine?

Hello, I have a coolant leak and have to replace coolant every few days. I did notice one of hoses underneath the hose that runs from coolant reservoir has a leak but unsure of name of hose or part number. I would like to replace the hose that runs from the top of reservoir and the one that runs alongside the front of engine. VW emailed me a diagram and I have no idea how to read it. Any help is appreciated. Thanks