Family placement by Point and Reference plane

Hello dear professional,
I bumped onto the model of curve ceiling. And one element of the framing ceiling is done in the way that I don’t know. I Suspect that that people were having the excess to reference plane of revit via Dynamo or some other ways.

This family is done in mechanical category. And as per Dynamo can be placed by point. And dynamo doesn’t provide any functionality to place families using the ref planes as well.

Do you have any ideas how this result can be achieved ?
Here the revit file for your review:
https://we.tl/t-0O3T63edBl

Hi,

Is this what you’re trying to achieve?
However, you’ll need a face-based family.

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