You can select the Morlet, Paul, or GaussDeriv wavelet. The wavelet will be complex in the time domain if the Complex box is checked. The Adj field sets the adjustable parameter for the mother wavelet. For the Morlet, this will be the wavenumber and the range will be from 6 to 20. For the Paul wavelet, the order can vary from 4 to 40. For the Derivative of Gaussian wavelet, the derivative order can vary from 2 to 80.