Molecular Dynamics Simulation could not integrate Nvidia GTX 1660 with our GROMACS

We purchased a system I9 20 cores with 64 GB RAM and Nvidia GTX 1660 GPU for Molecular Dynamics Simulation. Unfortunately, despite our all efforts and the use of available help on your webpage, we could not integrate Nvidia GTX 1660 with our GROMACS. Can you please help me out? Please send step by step guide to install and integrate GPU with GROMACS. We are currently using Ubuntu 20.04 operating system.
We are anxiously waiting for your response.