Some newbie's questions

[Twissell]

So here we are

1. How to make breadcrumbs (Category -> Subcategory -> Topic) in the Header? Is it theme-specific feature?
2. How to close some topic for further replies?

[Twissell]

3. What plugin(s) should I use in order to add custom fileds (Sex, Date of Birth etc.) to user registration form?

[dogs]

@twissell

To close a topic use topic tools:

What plugin(s) should I use in order to add custom fileds (Sex, Date of Birth etc.) to user registration form?

Thats a really good question. I need that to. Is there anything available? Couldnt get https://github.com/NicolasSiver/nodebb-plugin-ns-custom-fields to work... Would be perfect.

[Twissell]

4. How can I force full user's name display on users online panel?
   Instead of just circle and the first letter of the nickname.
   Displaying only username in plain text is acceptable too