Hi Noel,
Thank you for the screenshot. You would only see the template button if you were using the Quick Detail Page, which is currently a half page that displays on the right. Based on your screenshot you are using the Editable Detail Page, which is a full page display.
It is odd that the Plan Est field isn't displayed for you by default. I did some testing and it can be hidden by an administrator. When you have a chance can you have a workplace or subscription administrator check this fields settings?
They can do this by clicking the Tools icon in the upper right to go to the Setup. From there they would select the Workspaces & Projects tab, and locate your workspace from the list. Click it to open its detail page. On the left there is a list of options, they would need to select Fields from that list. Now they would select Defect for Type and locate the Plan Est field. Click the Gear and select Edit to launch an edit window. They will want to review what has been selected for Visible to see if its visible in your workspace and project. If it isn't then they can make it visible. Here is the help article with the steps to do this as well: Create and Customize Fields | CA Agile Central Help
If this still doesn't resolve the issue please let us know and we can continue to trouble shoot through a case.