The module does wat it says... Embedding a block into a node field. This can be a self made block from the library or a block from a view. Even core blocks (who is logged in?) can be used.
Add the field as usual.
An example. Would you like a block between other fields? You can choose a different block fot each node or you can set a default block.
I made a block myself:
embedded in the node:
An example of a blovk view. With Views Field you can do the same... Remeber.. with Block Field you can not use contextual filters...