You can use the settings on the Vault Cache tab of the Domino Desktop policy to control behavior of the Vault Cache.
To enable users for Vault Cache
Before you start this procedure, you must have modified the mail template databases using the Install Vault Cache option in EVInstall.nsf.
If you have not already done so, grant permissions to the users who you are going to enable for Vault Cache.
Open the properties of the Domino Desktop policy and click the Vault Cache tab.
Synchronize the mailboxes. You can run the Domino Provisioning Task to synchronize the mailboxes. You can do either of the following:
Use Synchronize Individual Mailboxes, which is on the Synchronization tab of the provisioning task's properties. This method requires you to select the mailboxes you want to synchronize.
Use Run Now, which is on the Schedule tab of the provisioning task's properties. Run Now processes all mailboxes in the Domino domain, but may take longer because the mailboxes that are associated with other policies may also be processed.
The Vault Cache will be available to users when they create or update their local replica-based mail.