DUAL WAN - some to wan1 and other in wan2 and all in the same LAN

Hello,
My actual configuration:
WAN1 - 10.1.0.1
WAN2 - 10.2.0.1
LAN - 10.0.0.1/16

At this moment, All the computers by default use WAN1 and if fail the mikrotic automaticaly change to WAN2.
I need that one computer alwais use WAN2, if the WAN1 is active this computers only use WAN2

HELP ME PLZ !!!

SORRY FOR MY BAD ENGLISH !!!