'Can I tie 2 agents at once?

I am trying to make 2 Jenkins agents do the same job at the same time.

2 agent's label is same:'rs'.

Project setting is "Restrict where this project can be run" selected Label Expression 'rs'.

When I click build now button, only one of the agents is working.

Is this normal? Is there a way to distribute one job to multiple agents at one click?

Thanks for your help.

jenkins

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