One sample Preps configuration profile for each of the automated imposition workflow types is included in the \AraxiPreps\Profiles folder. These profiles are based on the standard PrepsPrinergy profile. You can use them as is, or you can edit their criteria for signature matching.
Note:

JDF Match Then Create
This profile always first attempts to resolve signatures, and creates a signature only when unable to find a match. It uses these profile settings:

JDF Match Only
This profile always attempts only to resolve signatures to an existing template, and never autocreates signatures. It uses these profile settings:

JDF Create Only
This profile always autocreates the signatures and ignores any templates that are in the Templates folder. It uses these profile settings: