Case A: Using your logbook

If you are using a special callsign (example IW1QLH/P or IW1QLH/IM or 3A/IW1QLH/P) you have to say it to your logbook program.

If you are using Ham Radio Deluxe:

• When you are adding a new QSO open the tab "My Station"
• Type your special callsign in the field "Callsign"
• Write other information (city, equipment, etc) - Optional
• If you use this profile many times then you can save it using the panel "Profile"

     If you are importing your logbook from a different program using an ADIF file, bear in mind that HRDLOG.net uses the ADIF field "station_callsign" if present.

By doing so the QSO will be sent to HRDLOG.net and will be stored inside your logbook.

Case B: Using a new logbook

In the other way, if you are using a special callsign (example DXpedition, contest team, etc) you can create a new logbook in HRDLOG.net (Login -> Utilities -> New Callsign).     

Source: http://www.hrdlog.net/docs/SpecialCallsign.aspx