So here are my notes for the previous version, I literally went to type this up only to find NoScript updated itself in the past day or two.
You have Default, Trusted, Untrusted and Custom.
Double-Clicking on either of those will give you more granular control ranging from scripts to media to fonts and webgl, which is nice. Untrusted has everything unchecked by default, Default seems to have scripting and most other things turned off by default, and Trusted and Custom you have to set yourself, with Trusted I think having Scripting on by default.
Now if you change the settings for any of these, at least on the previous version, your changes will apply to all domains under that category, so if you have scripting on for Custom, you'll have Scripting on for all domains you've set to Custom. Now whether this is still the case for the latest version, I couldn't tell you at this exact moment, but hopefully that's enough to get you started.
"Temporarily allow" also seems to have been replaced with a clock icon which you can find next to the Trusted and Custom category markers, which I only knew about from reading the blog updates. The latest update added three icons to the top right which are fairly self explanatory, one is options, one is for temporarily allowing all of the page and one is for revoking temporary permissions.
All in all I wouldn't say it is the most intuitive UI, particularly after having used NoScript for about 10 or 11 years. That said, if you're willing to allow yourself a bit of time to get used to it, most of the core functionality is retained, and is in fact a little bit more granular than before. When I have a little bit more free time, I intend to test out Custom a little bit and see if I can use it to allow some websites to render custom typography without having to run JavaScript. Theoretically that should be done completely in CSS, but I haven't kept on top of web standards since deciding not to be a web developer about 10 years ago so I'm not sure to what extent websites still depend on JavaScript for typography.
Thanks so much for this. They sound like some improvements, especially the timed/clock feature. Useful for not wanting to whitelist a website you need to view. I never find temporarily allow all too work that great - sometimes required several cycles.
Can I ask do you run it with ublock or other ad blockers?