Name, logo and interface language

The name and logo of your space are what members see at the top of the public site and what you see in the space switcher; the interface language setting decides which languages that site can be displayed in. All three are on Settings → General.

You need permission to configure the space (Space → Configure) to open the General tab at all. Without it the tab isn't shown — see Access management.

Each field saves on its own as soon as you commit it. There is no page-level Save, and nothing you change here needs a republish to take effect.

Change the name

Open Settings → General.
On the General card, edit Name.
Commit the field.

The name appears in the space switcher, in the browser title, and on the public site. It is free text — changing it breaks nothing, because links to your space are built from the key rather than the name. If you want to change the address as well, read Space key and public address first: that one is disruptive.

Upload a logo

Open Settings → General.
On the General card, use the Logo upload.
Choose an image file.

The logo becomes the space's avatar: in the space switcher at the top of the sidebar, in the list of spaces, and on the public site.

Choose the interface languages

Language on the Interface card is the list of languages the public site can be displayed in. Members pick from that list; whatever they pick, the interface — menus, buttons, labels — is translated, and the content you write is not.

Open Settings → General.
On the Interface card, open Language.
Leave Allow all available languages ticked to offer everything the platform supports, now and in future.
To offer a fixed set instead, clear the checkbox and pick the languages you want from the list.
Commit.

The field then reads All, or the number of languages you chose.

Restricting the list is worth doing when a wide choice would confuse people — a national olympiad that expects everyone in one language, for instance. Leaving it on All means new languages appear as the platform adds them, without you doing anything.

This has nothing to do with the languages a problem statement is written in. A problem carries its own translations, and a member reading the site in Ukrainian will still see an English statement if that's the only one the problem has.