13Colonies how to make SQL Spot Collector filter


how can i create a filter on the SCollector that does 

Band and Mode and Callsign LIKE 'K2?'  and Unworked

when selected, i only want to see the 'K2?' stations that on cw or ssb are unworked ??? 

putzed a bit, reading help file... seems to work until i add "unworked"... also would like only spots from the last 30min only...  also how to work in GB13COL WM3PEN TM13COL stations in addition to K2?

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