How do i answer these retrosynthesis question, showing the synthons, etc. I understand that $1)$ can be performed using Gabriel Amine synthesis $($which i was taught$),$ but how do i show it$?$ What about $2)$ show mechanisms for $1)$ and $2)$ so i can understand the logic of the reactions

1) Proposed a synthesis of 2) Proposed a synthesis of NH NH starting from starting from