The Tier 5 Government Authorised Exchange is designed for individuals who are looking come into the UK on approved schemes, the aim of which, is normally to share knowledge and best practices. It may also be for experience and cultural exploration in the UK. It is not designed or intended to fill employment vacancies or to hire unskilled labour to the United Kingdom.
The sponsor in this category is normally an overarching institution that manages the country's exchange scheme. It is very important that the overacting body has the support of the UK government.
It is also important to note that private employers are not allowed to sponsor migrants in this immigration category notwithstanding their sponsor license.
Exceptions to private sponsorship include :-
The length of stay under this visa is usually 1 or 2 years. This largely depends on your current scheme as well as the duration of your employment as stated on your COS.