How to give access in ECM documents to third party auditor ? Dolibarr 12.0.2

Using my Dolibarr Other native modules
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How to give access in ECM documents to third party auditor ? Dolibarr 12.0.2.

I hv created few files and folders under manual ECM and created a third party user. Now Can I give access to selected folders and documents of ECM to this third party user…?

Thanks for the help