This dialog allows you to select or create items (such as a template, component, model) from the Altium Vault for release.
This dialog can be accessed from wherever you need to choose a vault-based item, including:
After launching the relevant command or pressing the relevant button, a version of the dialog will appear. This is a slimmed-down variant of the full Vaults panel. Navigate through the folder structure on the left to find and select the desired target item then click OK.