How do you define explicit nonlinear materials in patran?

[SaeidII]

I could not figure it out how to create materials that are supported by Nastran Explicit NL Analysis in Patran;
Documentation says the following materials are not supported in patran:

Unsupported Materials in Patran Preference
All the material models listed above are supported with the exception of the following:
MATD018, MATD034, MATD036, MATD037, MATD039, MATD040, MATD053, 
MATD066, MATD072, MATD071, MATD72R, MATD087, MATD089, MATD093, 
MATD094, MATD095, MATD097, MATD112, MATD114, MATD116, MATD119, 
MATD0121, MATD123, MATD139, MATD147, MATD158, MATD181, MATD196

So patran shall support for example MATD016, But I don't see any option to create such material in Patran.
What am I missing?! :/