If your edits happen inside the text then it isn't locked AND it isn't placeholder text that shows when the field is empty. Perhaps someone has grouped content - which prevents edits (except for enclosed CCs) and perhaps prevents deletion of those enclosed CCs.

The instructions "This section will auto-populate upon completion of the evidence record" allude to a piece of information that is missing - is this saying it is a linked CC or is the summary being created by a macro or some other process? Are there links to external data (eg evidence record - is that a separate file/workbook?) in the document?

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Andrew Lockton
Chrysalis Design, Melbourne Australia