To create a transfer approval rule, use the following steps:
Go to Transfers tab
Click Transfer Rules right next to Send a Transfer
Create a rule
Create a name for the rule
Set the minimum and maximum amount you want the rule to apply for
Select the person or the group of people you want this rule to apply for
Customize the rule approval workflow to your needs
For example, you only need any one of the owners to approve for the transfer: Select Any of and then select Owners
Or, you want specific owners to be approving transfers: Select All of, and then select the individual persons.
There can be multiple steps of approval if you need, same logic as above.
Hit Create rule and you're all set!
See video below to learn how to set up single or multi-step transfer rules within Vault: