TR-3832 gives examples of using this..
To enable FlexShare at the command prompt, type:
> priority on
If you only want the caching of FlexShare enabled (if you intend to use all FlexShare functionality do not
perform this step), also type:
> priority set enabled_components=cache
Once the components are enabled, you have two options to combine with the PAM caching mode:
> priority set volume Vol1 cache=keep