Modelling of fussed proteins

Dear I-tasser users!

I want to model chimeric protein which consist of two fussed proteins ( tail to head fussion C to N termi). It's important that both of that proteins have known spatial structures which could be used as the templates.

In the I-tasser input I've defined merged sequences of my proteins as one entry.
Is there any way to use both of the templates to guide I-tasser modelling ? In the input option I've found only possibility to use one template.
What additions should I provide to I-tasser for better modelling of the fussed protein?

Thanks for help

Gleb