Add link to form as a field

Hello! How can I add a field that is a direct link to a form? I'd like to add the link as a button, with one button appearing for every row in a report. I expected to be able to create a field with type URL and then include the URL of the form... but it's not obvious to me what the url of my form is :). (it's not the default form for the table). 

There appear to be several past posts related to this topic, and I wish I could access them! (The current service issue is preventing me from viewing them.) Any help will be appreciated! Reading the discussion posts of others has been a great help to me.

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Chyanne Eyde
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