The organization has a strategy to copy its VM and Agent backups to the alternate...

When implementing a backup copy strategy for unstructured data backups with additional retention, a File Share Copy job is the correct configuration. This type of job is designed to copy backups of file shares to a secondary location, which in this case would be the alternate site. It allows for the setting of additional retention days beyond the original backup retention policy.References:

Veeam Backup & Replication User Guide: File Share Backup and Copy

Veeam Knowledge Base: Configuring File Share Copy Jobs