Sometimes when you write a professional letter, it might need to be signed by more than one person. When you are working with multiple senders, you will need to include multiple signature blocks. Generally, the best way to handle formatting a letter with multiple signature blocks is to put the signatures one beneath the other on the page. Other information will need to be included as well, such as a typed name, title and perhaps a company name.
Skip three or four spaces below the closing of your letter.
Type the name of the first sender who will sign the letter.
Add the first sender's title and company name on separate lines directly below the typed name.
Repeat steps one through three for the second sender.
Continue repeating steps one through three for the rest of the senders of the letter.
Print the letter. Each sender should sign his or her name in the three or four skipped lines above their respective typed names.