epub link to excel

Hi

I am a noob at eBook writing. I am trying to write an eBook about excel tricks and tips.

I have managed thing like videos and images etc, but the issue that I am struggling with how can I get a a link to open an excel file with examples to work on.

• Is it possible in Sigil?
• Is there a different tool to use?
  How can I do it in Sigil?

Many thanks