Is there a way to lock rows or columns?

I’ve migrated over to a VPS and just got Collabora running today. Am I missing it or is there no option to lock rows or columns? If the option exists, where is it?

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I’d like that too. In fact a way to lock any selection of cells would be the best.
Is there any plan for that?

I am looking for that too, as that works in onlyoffice.