Keeping the underlying key the same

With "Uncapoed" selected, the uncapoed key will not be changed when the capo position is adjusted. This means that as the capo position is moved up, the capoed key has to be shifted down to keep the underlying and capoed keys equal.

Keeping the capoed key the same

With "Capoed" selected, the capoed key will not be changed when the capo position is adjusted. This means that as the capo position is moved up, but the uncapoed key has to be shifted up as well, in order to keep the underlying and capoed keys equal.