Distribute Vusers to Load Generators

Hi, 

I am using TruClient Protocol and since it needs lot of resources to run and not clog the load generator, I am distributing 100 Vusers to 5 LGs that I have. But, is there a way to make the distribution automatic? Right now, I am manually going to Vusers and selecting them to run on different LGs. Is there a better way to do this?