The powerJobs button is not shown in the Vault menu after installation or disappeared from the menu after starting Vault.
After a new installation of powerJobs, the menu extension isn't loaded yet. Also sometimes the powerJobs button is disabled. Sometimes the menu could also get changed by Vault when starting it again.
- Right click anywhere in the menu and click on "Customize ..."
- Select "Standard" and click on "Reset"
After that the powerJobs button should be visible.
In case your button just disappeared, this solution should be preferred as it doesn't reset your other customizations. Click on the small arrow to the right of the standard toolbar, then click on powerJobs to reactivate it.