When using Superhero eSIM for roaming, you should set it to ON. This allows the eSIM to connect to the best local networks while traveling without incurring extra charges.
However, if you have a Primary SIM, make sure to set its roaming to OFF. This prevents your home carrier from charging you high international rates while you're using Superhero eSIM.
In Summary:
Superhero eSIM: Roaming ON
Primary SIM: Roaming OFF
This way, you can enjoy your travels without worrying about unexpected bills!