I have 2 roles created for my Dbricks acc on AWS. Want to know which role will be used by Dbricks for AWS resources (ex. Cluster Creation)

AnandR
Databricks Partner

I have 1 role with AWS root account and 1 role wit AWS non-root account. How do I tell Dbricks to use specific role for cluster creation ? Please guide me here or if any documentation will also suffice . Thanks.