Users or user groups can be set as vault owners to manage specific vaults without having access to data source administration. This can be done in two different locations:
In Administration – Vaults, either when creating a new vault (+ sign), or editing an existing one (pen-shaped button).
In the vaults themselves, by clicking on the ellipsis button next to the vault's name, and then Edit vault.
In the Add vault or Edit vault settings window, go the Vault owners section, and click on the blue ellipsis button next to the Vault owners bar. Ticking the box next to individual users or user groups gives them vault owner status. Click on Update to apply the changes.