Bio-Rad EXQuest Spot Cutter - Manual (Page 170)

Matchsets
5-19
Note: Most MatchSet gels require at least two landmarks before auto-matching will
occur. The gel that was used as the template for the Master may be auto-matched
after only one landmark is placed.
If you select Match > Automated Matching you open the Automated Matching
dialog.The dialog contains two tabs, one for Primary Matching settings and one for
Extended Matching.