SnapCenter 4.0 vSphere Plugin - How to update vault with other schedules?

Hello, 

I am using SC plugin to take VSS snapshots for VMs and hence vault to secondary storage (FAS2620). 

Flow of snapshots: 

SC plugin initiated -> FAS8200 -> vault to two seperate FAS2620

(All FASs are ONTAP 9.3P4.)

For one of the vault relationships, I want to have different update time from the VSS snapshot time, such as 3 hours lag. 

It seems I can only customize the SnapMirror labels by checking the box "Update SnapVault after backup" from the plugin policies. So I cannot uncheck the box and simply use the schedules from storage side. 

Is there any way to delay the vault relationship updates? 

Any advise would be greatly appreciated!