API/ Microservice specific testing using gatling

I am new to scala and gatling . Till now i have recorded scenario specific simulation using gatling but I would like to know how to perform load on each API individually.

In my scenario, I have different API like loginservice, accountservice and message service and since recorded scenarios are scenario specific they are not actually performing load test on each API individually.

I want to perform load test on each API separately and check the performance.

Kindly let me know the way to achieve this.