Continue to Step 4 in the Mail Merge Wizard, and then use the Date content control with the "CLICK HERE TO SELECT A DATE" placeholder text to select the date March 12, 2021.

1. In the Mail Merge Wizard, proceed to Step 4 - Write your letter.

2. Click on the location in your letter where you want to insert the Date content control.
3. Go to the Insert tab on the toolbar.
4. In the Text group, click on the Date & Time option.
5. A dropdown menu will appear, select Date Picker Content Control.
6. In the Date Picker Properties dialog box, you will see "Click here to enter a date" as a placeholder text. Replace it with "CLICK HERE TO SELECT A DATE".
7. Click OK to close the dialog box.
8. Click on the Date content control to select it.
9. In the Properties group on the Ribbon, click on the Date Picker Content Control Properties icon.
10. In the Content Control Properties dialog box, you can select the current date, display the date like "March 12, 2021", and set a minimum and maximum date if needed.
11. Once you have made the necessary selections, click OK to close the dialog box.
12. Your Date content control will now display "CLICK HERE TO SELECT A DATE" in your letter.
13. Click Finish & Merge in the Mail Merge Wizard to complete the process with the selected date of March 12, 2021.