Apply space to a zone

[Sylvain]

Hello,

I would like to apply 2 spaces for each line of a zone but I can
manage to do it, here is how I proceed:

M-x start-kbd-macro
"do my 2 space"
end-kbd-macro
C-<SPC>
"selecting my zone"
apply-macro-to-region-lines

Thanks!
Sylvain