Studio>Polyglot>Settings

Default Language: Set whichever you want

Australia, England, United States will see English.

Germany will see German

Russia will see Russian

Canada, France will see French

If Poland, Spain, or other country... will see their Language, if not then whichever you chose will be Default.

You're right, most people don't look at footer or easily overlooked. Great idea and thank you! I have just added Language to the top and can confirm it's working.

Studio>Navigation>Items>System>Toolbar Member

Add New Item

System Name: Language

Title: Language

Submenu: Language Switcher (either inline or popup)

Show submenu in popup: On (green)

Save