Use the GCP Console under IAM Roles to combine both roles into a new custom role. Then, grant this role to the SME team group at the organization level.

Execute the command gcloud iam combineroles --global to merge the two roles into a new custom role and assign it globally to the SME team group.

In the GCP Console under IAM Roles, combine both roles into a new custom role. Assign this role to the SME team group at the project level and use gcloud iam promote-role to extend it to all other projects.

Combine both roles into a new custom role via the GCP Console under IAM Roles. Assign this role to the SME team group at the project level and repeat this process for each project.