Kibana GUI read-Only User

ElasticSearch Version: 7.0.0
SearchGuard ElasticSerach Plugin 7.0.0-35

Kibana Version: 7.0.0
SearchGuard Plugin 7.0.0-35

# User
test:
  hash: $2a$12$VcCDgh2NDk07JGN0rjGbM.Ad41qVR/YFJcgHp0UGns5JDymv..TOG
  roles:
  - test

# Custom roles  
sg_test:
  readonly: true
  cluster:
    - CLUSTER_COMPOSITE_OPS_RO
  indices:
    '*':
      '*':
        - READ

# Role mapping:
sg_test:
  readonly: true
  backendroles:
    - test
  users:
    - test

The test user is able to delete and edit saved objects, dashboards and visualizations in kibana GUI.

Can anyone guide me through the proper steps for a read only kibana GUI user?