Rate goes up and down simulation scenario

Gatling (Open-Source)
1

Hi,

So the scenario I want to create is to have a large group of users injected in the beginning then after wards, the rate of injection users goes up and down.

I was thinking of using the following sequence
atOnceUsers(nbUsers)

rampUsersPerSec(rate1) to(rate2) during(duration) randomized

is rampUsersPerSec the best approach in my case or is there other methods can be suited in my case?