OK, thanks for clarification. It took me forever to find this solution, so to help others find it, I'll post:
initialize array of Stepper objects
initialize array of Stepper instances
make array of Stepper objects
make array of Stepper instances
as search phrases that will hopefully help others find this!
Stepper motors[] =
{
Stepper(80,5,6),
Stepper(75,9,10)
};