I only need part of my document translated. What should I do?

There are a couple of things you need to do.

Change the word count

When uploading your file in step 4,  change the word count manually according to the text you want to have translated. 

Add a note to the "Project Brief"

Add a note in step 5 specifying which parts of the document should be translated. Consider highlighting the section/s that require translation to make the distinction obvious.