Go to Schedule A line 15.  Double click there and it will help you to create the worksheet. 

Second option - in the forms bar on the left scroll down and just below the Form 4684 P3 is the worksheet you can create it there.

Third option - when you hit F6 to open the Open Forms dialog box and go to the 4684 you will find the worksheet there. 

They do the data entry on the worksheet and then flow it to the form.

Dusty Ernie