Lastly, you need to add a line of code to each of the Render clicks on the SignatureForm; one is the Format the Text action, and the other is the Render HTML button. Add a line into the case statement that looks like this:

You need to change the literal at the start of the statement to the name of the placholder, and the doc.xxx(0) is the name of the data field on SignatureForm.,

You might also want to add fields to the site location documents. If you do, you will need to add them to the Location form, and then add fields to match to SignatureForm. Then you alter the "Click to get your Site Details" code, which looks like this:

You add a new FIELD row to copy the data from your template to the SignatureForm document. It's all pretty straightforward.

And there we have it. A simple application that enables your end-users to create their own email signature blocks without a great deal of effort, and which enable you to help them by creating samples in templates, and also to provide site and other details for them.