How to run multiple mdrun on multiple nodes

GROMACS version:2020.4
GROMACS modification: No

I want to run three MD simulations in three different temperatures 200,220 and 240, one on each node like 200 on node 1, 220 on node 2 and 240 on node 3.

I have access to HPC that uses SLURM and I can only submit one script due to job number limit.

How can I do that?

Thank you so much in advance.