Add the diminished 7 chord function

[standinrain]

it seems we can’t put the chord with diminished 7 chord like 1 3b 5b 7bb?
We can only put the half diminished chord like 1 3b 5b 7b?

[Vaz123]

Borrow vii°7 from Harmonic Minor or iii°7 from Phrygian Dominant