How to add known secondary and some tertiary structures to the calculation?

Thank you very much for I-TASSER! :) If you allow, I would ask a couple of questions. There is a protein, its secondary structure is known (and doesn't need to be predicted), and we already have some defined tertiary structures for three domains (and would like to install them inside the model). So there are two questions:
1. Is there any way to begin the calculation with a user-defined secondary structure?
2. Can one set these previously-known tertiary structures as templates (they are in different places of protein and can't be just joined together)?

Thank you again!:)