For your organization, in the Google Cloud Platform Console under Roles, select both roles and combine them into a new custom role.

For one of your projects, in the Google Cloud Platform Console under Roles, select both roles and combine them into a new custom role. Use gcloud iam promote-role to promote the role from a project role to an organization role.

Use gcloud iam combine-roles --global to combine the 2 roles into a new custom role.

For all projects, in the Google Cloud Platform Console under Roles, select both roles and combine them into a new custom role.