Specific Area Redaction Automation

Hello, I've recently picked up a task involving a list of company names.

I need to use the redact tool to remove information from this list so that the entries for only one company are visible. I then need to repeat this process for each company.

I've tried using the JavaScript function but can't seem to get that to work, specifically with difficulty in labelling variables.

I looked in forums for similar posts but these seem to refer to processes which repeat redactions of the same area.

Thank you for any help.