Running a preflight check can be done from the Enfocus Processing - Preflight panel, or, in a Certified PDF workflow, from the Certified PDF panel
You can open the Enfocus Processing - Preflight panel by
clicking the Enfocus Processing - Preflight button
choosing
Using the Enfocus Processing Panel - Preflight shortcut,Alt+Ctrl+P
using the Enfocus
Processing Panel shortcut, Alt+Ctrl+R and clicking
the Preflight button