You don't need to register with the various providers or set up any plugins. You set things up once and then you're done. See Dick's comment about the reg bit at https://news.ycombinator.com/item?id=33180661
Hellō has you set up multiple recovery providers and methods, making it unlikely that you'll lose access to your Hellō account. Visit https://wallet.hello.coop after you go through https://www.greenfielddemo.com/ and you'll see the workflow.
For example, your sample skill tree would just be something like this:
There's a JS-based playground for DOT (and various other graph description languages) at https://rsms.me/graphviz/