If the Feed Browser functionality is available in a template, browse for a feed entry by clicking Browse in the Fill In Form. The feed entry URL is pre-set in the template.
The screenshot below shows the Feed Browser being used in the Fill In Form for a graphic:
Click Browse to open the Feed Browser.
Any atom entries of the feed will be presented as thumbnails. Select one of the entries and click OK.
Information from the feed entry will be used to fill in the feed browser fields in the template: