How do I tell a Garmin 430 not to exit a hold? Let's say that we're directly west of CATLI and have been cleared direct CATLI for the RNAV approach.  We load the approach into the GNS430 and proceed direct the fix.

After crossing CATLI outbound for the hold-in-lieu-of-procedure-turn, we realize that we want to stay in the hold for a few more turns.  How do I tell the 430 that I don't want it to sequence to ZAMGI upon arrival at CATLI?
Press the OBS button to put waypoint sequencing into suspend, as indicated by the green "SUSP" appearing over the OBS button.