Hi @zj2000,
The Custom Designs platform is able to handle a large variety of factors type, from continuous, discrete numeric to categorical, mixture, blocking ... factors.
Here is a screenshot from the Custom design platform and the different factors types :
I hope this answer will help you,
Victor GUILLER
L'Oréal Data & Analytics
"It is not unusual for a well-designed experiment to analyze itself" (Box, Hunter and Hunter)