Assim Al Hakeem

Kindly refer to the following link(s):

Saying Ameen to the dua'a of a sheikh on TV 

Can we say Aameen to our own Duas and Duas made by others?

Must I raise my voice when making dua for myself & say Ameen?

Should we say Ameen after reciting Fatiha in Duhr and Asr & sunnah prayers as well? And if I pray the ‘loud’ prayer alone, should I say Ameen out loud? | Sheikh Assim Al Hakeem (website)

Is it from the Sunnah to say Ameen loudly after Fatiha?