Neem Cake (powder) and Neem oil How to use it.

I just received 1.5kg of Neem cake and a 10 Oz. bottle of cold pressed Neem oil.

I've been trying to read how to in corporate these ingredients in my IPM.
I wish I had added the Neem cake in my soil mix but I didn't have it at the time.
So should I just top dress with it?
How much should I use?
The instructions that came with it only had that it should be mixed with the soil before hand.
I've seen other post saying that they add some as a top dress but they never say how much or how often.
I'm growing 4 plants two earthboxes and two 15gallon fabric pots. I have added bokshi progro on top with ewc and I have a nice mycelium mat growing on top.

I use neem oil for bugs when I get them I just add about 2 tbls to a gallon of water kills mites and whiteflies quick

Thanks @bulla I found how to use neem oil. I started a thread about essential oils and IPM. I want to know how much need cake I should top dress per Sq ft.

bulla said:

I use neem oil for bugs when I get them I just add about 2 tbls to a gallon of water kills mites and whiteflies quick

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How often do u spray?