Setting up Shelf ID's/Giving my products a specific locations within the warehouse

Hello readers,

I was wondering what the fastest way is to assign my products to a specific location ID. In our warehouse we wish to every product a specific location ID, but now I am wondering how can I do this as fast as possible.

I wish to assign 3 or 4 products per shelf (180 shelfs in total), so my pickers can just lookup the shelf/location ID, and know where to walk to.

Do I manually have to assign each product to a shelf, or can I do it faster?

Thanks in advantage!