Vetta V100A Manual page 28

When programming Altimeter Memory 1, the
number "1" appears just below the elevation
figures (see illustration). When all the values
for Altimeter Memory #1 have been set, press
Button #1 to select it and advance to
Altimeter Memory 2 setting. In this screen the
number "2" appears on the lower display line.
To program a second elevation into Altitude
Memory, proceed as described above for
Memory 1. When the last digit for Altimeter
Memory 2 elevation has been set, press
Button #1 to select it and advance to Initial
Wheel Size Setup screen.