How to assign leads to another user?

How to assign leads to another user?

Hi we are a small team of 2. 
I created leads lists that the other user can now see (we made our records public to all users to achieve this) 

But I have leads in my dashboard I wish to allocate to the other user but cannot see how to or find any help in the forums. 

Please how? It should be simply to change owner or something??>?