Answer: I'm sorry for the delay in answering your question! It's the busy season here...but there's probably still snow on the ground in Connecticut, so planting hasn't begun yet, I imagine.
You can do either or both: put some in each planting hole adn incorporate it throughout the soil. It depends on how much "black gold" you have to work with, really. If you have just a bit, put a double handful in each planting hole and mix it with the soil. Spread mulch elsewhere on the soil, which will add humus throughout the garden as it decays.
If you'd like to read more about how to use your compost, and its benefits to your soil, read
Building Soil 101
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