== Providing Each User with a Private Special Callsign Database ==

Multiple users can [[MultipleUsers|non-simultaneously employ DXLab applications on the same PC]], but with separate log files and settings, and without the need to log in and out of separate Windows user accounts when switching users.

By default, DXView and !SpotCollector will reference a single [[https://www.dxlabsuite.com/spotcollector/Help/ConfigurationSpecialCallsigns.htm|Special Callsign List]], which can be used to

* specify callsigns that should be ignored when spotted, e.g. PIRATE or SLIM 

* specify callsigns whose spots should be ignored, and that should be ignored when spotted

* specify callsigns whose Spot Database Entries should not be [[https://www.dxlabsuite.com/spotcollector/Help/ConfigurationDatabase.htm#Size%20Control%20panel|pruned]]

* specify callsigns that you wish to work on each of 11 bands ((160m, 80m, 40m, 30m, 20m, 17m, 15m, 12m, 10m, 6m, 2m), or in each of 3 modes (phone, CW, digital), or on each of the 33 combinations of those 11 bands and 3 modes - as selected by the Leaderboard Settings ; these options are useful for Leaderboard competitions 

* associate callsigns with [[http://www.hamclubs.info/memberlists.php|groups or activities]] so they can be rapidly identified when spotted

=== Creating a Private Special Callsign List ===

To instead provide a user with his or her own Special Callsign List, 

 1. make sure that user's callsign '''C''' is specified as the '''Operator Callsign''' on the Configuration window's '''General''' tab

 1. in the [[https://www.dxlabsuite.com/spotcollector/Help/ConfigurationSpecialCallsigns.htm#Special_Callsign_Database|Special Callsign Database]] panel on the Configuration window's '''Special Callsign List''' tab, click the '''Make Unique to C''' button

This will

 * direct DXView to terminate (if it's running).

 * if the file {{{C_SpecialCallsigns.mdb}}} is not present in !SpotCollector's Databases folder, a copy of the {{{SpecialCallsigns.mdb}}} file is created and named {{{C_SpecialCallsigns.mdb}}}; !SpotCollector then uses the '''Special Callsign List''' in {{{C_SpecialCallsigns.mdb}}}.

 * if the file {{{C_SpecialCallsigns.mdb}}} is already present in !SpotCollector's Databases folder, !SpotCollector then uses the '''Special Callsign List''' in {{{C_SpecialCallsigns.mdb}}}.

 * replace the panel's '''Make Unique to C''' button with a '''Use with all Operator Callsigns''' button

=== Reverting to a Shared Special Callsign List ===

After a private '''Special Callsign List''' has been created, clicking the '''Special Callsign Database''' panel's '''Use with all Operator Callsigns''' button will 
 
 * direct DXView to terminate (if it's running).
 
 * if the file {{{SpecialCallsigns.mdb}}} is not present in !SpotCollector's  Databases folder, a copy of the {{{C_SpecialCallsigns.mdb}}} file is create and named {{{SpecialCallsigns.mdb}}}; !SpotCollector then uses the Special Callsign List in {{{SpecialCallsigns.mdb}}}.

 * if the file {{{SpecialCallsigns.mdb}}} is already present in !SpotCollector's  Databases folder, !SpotCollector then uses the Special Callsign list in {{{SpecialCallsigns.mdb}}}.

 * replace the '''Use with all Operator Callsigns''' button with a '''Make Unique to C''' button

You can then create a private '''Special Callsign List''' for another user by following the steps above.

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