I don't know if its possible to do so or not!
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2And what is your problem, what did you try? Can you show the code that you have till now? – Mara Black Jan 10 '20 at 12:05
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It's totally upto the end user to keep this collapsed/expanded. There is no setting as of today. Submitted an Idea
We don't have a Xrm client API to tweak this from javascript form events today. Submitted an Idea
Also, doing any DOM manipulation in client side scripting is unsupported.

Arun Vinoth-Precog Tech - MVP
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