В Present Continuous.
It's 2 o'clock. I am coming home. It's 3 o'clock. I am going for a walk. It's 4 o'clock. I am doing homework.
It's 12 o'clock. Tim and Bill are coming home. It's 1 o'clock. Tim and Bill are going for a walk. It's 2 o'clock. Tim and Bill are doing homework.
It's 1 o'clock. My friend is coming home. It's 4 o'clock. My friend is doing homework. It's 2 o'clock. My friend is going for a walk.

В Present Simple.
I come home at 2 o'clock. I go for a walk at 3 o'clock. I do homework at 4 o'clock.
Tim and Bill come home at 12 o'clock. Tim and Bill go for a walk at 1 o'clock. Tim and Bill do homework at 2 o'clock.
My friend comes home at 1 o'clock. My friend does homework at 4 o'clock. My friend goes for a walk at 2 o'clock.