looking to create an alternative life distribution model, for example, a defective subpopulation exponential CDF with time offset of the form

F(t)=p(1-exp(-[(t-t0)/alpha])

with parameter p being the defective subpopulation fraction, t0 the time offset and alpha the time constant

where the platform would provide the full complement of profilers, covariance matrices, etc

is there a way to insert a custom life distribution such as this?

thanks