Not able to run all simulations using gatling fat jar

Team,

Currently, we have created an uber jar for gatling simulations and dependencies.
We are currently able to run it via java command,

java -jar <Fat_Jar_Name.jar> -s <simulation_class>

But, it’s not fulfilling our full requirement.

Drawback:
→ Not able to run all the simulations with a single command.

Let us know if you have any solution or workaround to remove/mitigate this drawback.
Expecting your reply as soon as possible.

Thanks in advance.

Kind Regards,
Gaurav