Seeting up templates and ISM in arkime

Versions (relevant - OpenSearch/Dashboard/Server OS/Browser):

opensearch version: 2.6.0
arkime version: 4.2.0

Describe the issue:

How can one set up a custom template in Arkime and apply an ISM policy to the index created by Arkime? Is it possible to prevent Arkime from performing automatic rollover and instead apply the ISM template?