How to give different percentage of user load from different location in Controller

If we want to give different user load percentage from different location then

• We need to create multiple group with that particular script
• Then we can assign different percenatge of user load from different locations.

Example: I am explaining this with the following scenario

• User load: 30% from Japan,10% from US,10% from Aus,25% from UK and 25% from India.
• In this case we need to create 5 different groups and assign the  above user load from each location.

Note:We cannot give all above user percentage to a single group.