You can type in Cdim7 as in #1 or right click on a beat, click on chord, select the root, then from the drop down menu select Dim7.

Also be sure to click on options, preferences, display, and check treat dim chord as a dim triad .............

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Chord Builder 2021-06-27 14.57.27.jpg (162.55 KB, 83 downloads)
Display Options 2021-06-27 15.04.34.jpg (332.71 KB, 82 downloads)

Why is it that doctors call what they do 'practice'?
If flying is so safe, why do they call the airport, the terminal?

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware