Kenesto offers a vaulting feature by default. There is no additional cost or plan to take advantage of this feature.
To check out / in a file in Drive
Right click on the file, go to the Kenesto Menu, and then check out.
To check in the file, repeat the process, but this time, chose check in. You will be prompted to make a comment on the check in.
This comment will be saved in the discussion tab and against the version of the file.
Check out / in in the web
To check files out / in, navigate to the file, and check out or in
or
on Check in, you will be prompted to save a comment. This will again be saved against the discusson tab and against the version of the file.