Hi @nzguitarist
There is (click Buy, then select the Update option), but do be aware that the eLicenser system (that Dorico 3.5 is on) will not be supported after March next year, and so users are encouraged to look at updating to the latest version if possible. At the very least, make sure your 3.5 licence is registered to your MySteinberg account.
Yes, Engrave mode on the iPad is only available when you are subscribed, and that’s where the note spacing & staff spacing override tools live. However –
Ideally, and as Ben said, adjusting your settings in Layout Options should in most cases remove the need for excessive overrides.
Here are the tutorial videos Ben recommended, and which are indeed very good: