The vault does not have the part I am looking for, but it does have PCB footprints for the package (like SOT23-3) for other parts. How can I use a footprint from the Vault in a local library part? In AD, the vault explorer lets you right-click and download a library with the part, but can't do this in CS. Is there any alternative way to explore the vault and get content (CS Vault requires a sign-in but this doesn't work at vaultexplorer.live.altium.com)?
For a footprint you can place onto a design of your own and then copy and paste the footprint into your own local library. Alternatively you can search https://designcontent.live.altium.com/ and download a library from there. The downloaded integrated library can be split into schlib and pcblib by opening as a project. From there you are free to copy to your own library or edit directly or even just reference the footprint from your own symbol.