Juniper MESA User Manual page 23

Up to four profiles with different settings can be
saved.
To save a new profile, configure the settings
previously discussed, come to this tab, select
the profile name you want to use, and select
Save.
Note: Any changes to settings after a profile is
loaded will not automatically get saved out to
the profile, but will get saved out to "last user."
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Mesa Barcode Scanner Owner's Manual