Different design constraints for different lines

Resp. Sir/Mam, 

Please guide.

How can I design the same (one) project. with different design constraints for different lines.

In same project I have a flat terrain as well as hilly terrain.

For flat slope will be 1 in 200 & for hilly terrain it will be 1 in 50.

Thanks & Regards,

Uday Patil.