Tips when arachne-pnr fails to route?



I’ve seen from some of the discussions and my only projects that arachne-pnr sometimes fails to route. From this link ( it seems you can overcome this issue by using the “-r” option with arachne-pnr to “randomize the seed.”

My question is how can I add the “-r” option to the build command to the Atom IDE/APIO?

Thanks for the patience and help w/this!