How to stop the disk optimiser and...

Can someone please advise me whether:

1 - The Disk Optimisation feature can be switched off for good in Norton Security?  (I do not need my ssds to be optimised, TRIM does that)  I have looked at the performance settings section but cannot see an entry.

2 - the version 22.5.4.24 is Norton Security 2016 (as opposed to 2015)?  I have assumed that version upgrades just come down the line as they happen but wanted to check that I am on the latest 2016 version.

Thanks

David