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This would be easiest if you have wufoo and silva both opened up in different tabs before starting.
Click on "Wufoo Form" on the left hand side under "More...".
Find the ID of the wufoo form that you want to add to silva. Then type that ID in as the "Form Name".

You will also need to fill in the Default Size. You will find this by clicking on "Code".

After you do that, you will click on "Embed Form Code" and then search for the "iframe height," this is the number that will go in the "Default Size" box.

Now that you have the "Form Name" and the "Default Size," enter them into their appropriate boxes.
