should be. After you start the program, you can take a look at it with the command of kafka:

 
 look at how many consumption instances have been created for you, and  groupID  is the same. That belongs to the same group. 
 can serve as a redundant and loaded job, but it is not reasonable to allocate 100 instances in two processes. 
 you can have 4 processes, each process has N consumption instances, and the specific number depends on the number of partitions of your  Topic .