How to harmonic scales

I'm a new. thak you for designer this site

How to make harmonic for scales ?

do you mean how do you harmonise scales?

This is done by stacking thirds of a scale for example in C major:

CDEFGABC

I - CDEFGABC C major

II - DFA D minor

III - EGB E minor

IV - FAC F major

V - GBD G major (dom7)

VI - ACE A minor

VII - BDF B minor flat fifth (diminished)

Hope this helps, if this wasn't what you were asking about please say and i may be able to help, Mark

in the first thank you for your interesting.

this a song my way (pic)

the key signature is a C major

I have some questions

- why there are Em7 and A7 with this harmonic, these chords, it's not from the part of the table that you had told me about it

- why C major with the note G, Em7 with E, A7 with G

- could we do harmonic for other notes instead of these notes

- could we change this harmonic ( these chord ) by using another

harmonic for the same scale.

and thank you again .

...I have some questions

- why there are Em7 and A7 with this harmonic, these chords, it's not from the part of the table that you had told me about it

...

Exactly....they are part of a different 'table', from a different parent scale. The example Mark gave was C Major, so to get (for example) A7, you'd use D Major and build the same table...