Hello there, @JBSt3.

I appreciate you coming back to us for additional support. Allow me to join this thread and clear this up for you.

The Z icon should show up once you turn on and add price rules. Next thing we need to check is your estimate format. Let's make sure that the Cost column is added:

1. On the Estimate window, click Formatting.
2. Click Customize Data Layout.
3. Go to the Columns tab.
4. Put check marks on cost's screen and print boxes.
5. Click OK.

Once done, add an item and go to the Cost column. Then, click the Z icon.

That should guide you in selecting a price rule on the Estimate window, JBSt3. For additional reference, please check this article: Use and customize form templates.

Please know that I'm still here to help you further if you have more questions. Just add a comment or mention my name. Wishing you all the best!