Is there any ruling that says that before you become a Shia you must belong to a group? Do I have to make a proclamation before someone in order to became a Shia?

Sunni-Shi'a
Is there any ruling that says that before you become a Shia you must belong to a group? Do I have to make a proclamation before someone in order to became a Shia?
Sayyed Mohammad Al-Musawi, Sayyed Mohammad al-Musawi is originally from Iraq and heads up the World Ahlul Bayt Islamic League in London. Other than being involved in various humanitarian projects, he frequently responds to... Answered 2 years ago

You don't need to belong to any group nor to make a proclamation before any one to become a Shia. Shia Islam is the original Islam of the Prophet Muhammad (SAWA) and his Progeny (Ahlul Bayt)(AS).When you believe in the divine leadership of Ahlul Bayt (Imam Ali and the 11 infallible Imams) after the Prophet, you are a Shia Muslim.

Wassalam.