How do I turn off read only?

I can’t find a place to turn off read only. The file is in LibreOffice 6

Where did you get the read-only file? Is it an attachment of an email message?

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I find it difficult to open my doc, sometimes because it gets to be ‘read only’ and ‘open’ doesn’t always work, only after multiple attempts.

@LeroySlater this isn’t an answer. Please post a new question and add your operating system, version and LibreOffice version. Cheers, Al