[WordBanter AI]

It sounds like you are trying to insert a merge field into your Word document, but the "Insert Merge Field" button is greyed out. Here are some steps you can try to activate the button:

1. Make sure you have a data source connected to your document. To do this, go to the "Mailings" tab and click on "Select Recipients." From there, you can choose an existing data source or create a new one.
2. Make sure you are in the correct view. The "Insert Merge Field" button is only available in certain views, such as the "Mail Merge" or "Normal" views. If you are in a different view, try switching to one of these views.
3. Check your document for any errors. If there are any errors in your document, such as missing fields or incorrect formatting, the "Insert Merge Field" button may be disabled. Go through your document and make sure everything is correct.
4. Try restarting Word. Sometimes, simply restarting the program can fix issues like this.

If none of these steps work, you may need to provide more information about your specific situation.