To insert a signature field into your reporting template:
1) Hover your mouse where you want the logo to appear (this is typically at the top of the page)
2) Select the + button to add a new item
3) Choose Templates from the menu, followed by Account Logo:
The signature field will adjust to the appropriate size when the report is signed.
Selecting Finalized By in the Templates menu will insert an additional label that says "Finalized By" when the report is signed.