Я подала документы на программу для

Я подала документы на программу для аспирантов. Главным приоритетом является обучение в Варшавской политехнике. В перечне необходимых документов было сказано о необходимости заблаговременного соглашения с будущим руководителем с принимающего вуза. Подскажите, пожалуйста, какая форма документа support letter должна быть (если вы имеете пример, то прошу выслать его) и кому нужно отправить письмо о подтверждении от будущего руководителя?
Переписка с будущим руководителем уже состоялась, и он спрашивает, необходим ли мне support letter.

Результаты (английский) 1:

I applied for a postgraduate program. The main priority is training at the Warsaw Polytechnic.The list of required documents has been said about the need to advance the future of the agreement with the head of the host university. Tell me, please,what form of document support letter should be (if you have an example, then please send it) and to whom you want to send a confirmation letter from the future leader?
Correspondence with the future leader has already taken place,and he asked if I needed support letter.

Результаты (английский) 2:

I applied to the graduate program. The main priority is education at the Warsaw University of technology. In the list of required documents has been said about the need for advance agreement with the future head of the host University. Tell me, please, what form of document support letter should be (if you have the sample, then please send it), and to whom you want to send a letter of confirmation from the future leader?
Correspondence with the future leader is already there, and he asked, do I need a support letter;

Результаты (английский) 3:

I filed documents on the program, for post-graduate students. The main priority is to train in the Warsaw sportsmen.In the list of documents, it was said about the need for early agreement with the future leader of the receiving school. Tell me, please,What is the form of the document support letter must be (if you have an example, please send it) and to whom you want to send a letter of confirmation from the future of the head of the?
correspondence with the future leader of the already took place,And he asked, do i need a support letter.