How do i make a dynamic system model with given Rise time, Setting time and overshoot?

I wanted to make a dynamic system

sys = whatever(risetime,settingtime,overshoot);

Then i wanted to plot a step response.

how do i do it?

[Star Strider]

No such magickal function exists. You have to build your system, then tune it. Start with the systune function, then follow the links.

Have fun!