The,friends playing, section of the main home screen should only show friends playing games...

On the main screen below the play button, there are a series of icons. The one to the far left of the group takes you to the gifts section. You can send and receive gifts (keys and bonus items) to / from friends, and you should be able to collect the community
goal rewards here as well.

No, this is before we even try to get into a game, on the home screen. In Fifa 18 it always shows me 0 friends online, even though he is online and playing the game.

Hi ArmedTangent204,

On the main home screen there is only recently used apps. If you go a screen to the right then you should see your friends activity and achievements in the friends tab. Is this the tab you're referring to? If it is, then make sure you're connected online
and have done all the Xbox updates. The friends tab has been there a while, but did come. After the Xbox One launch.

Aside from the TOS the above has mentioned no its not possible. Because only one main account can be set as a home console at a time. The only loop whole is if he kept his ffia friends account set as home then if he wanted to play a game from a non home
account. That account would have to be signed into the xbox while he play say CoD. The second hos other friend signed into his account he would lose access to CoD because his friend would log out on his account on to his main.

I did not say that.

I said in order for you to be able to play your friends digitally bought games you would have to set YOUR console as your friends profiles HOME console. You can keep YOUR console set as YOUR profiles HOME console at the same time it will not affect your
friend sharing his games with you.

If YOUR friends games are not showing up under the ready to install section on YOUR console when you have YOUR console set as HIS profiles HOME console then that means that profile does NOT OWN the games Digitally he may own them on disc but the HOME console
setting only shares DIGITALLY bought games.