OK.
Then, I am missing something here.
From the launcher settings I cannot make 5x6, only 5x7.
That's because I am able to change the columns count and not the rows count in the same set.
Whenever I change column count in 5 it gets 5x7 automatically.
In this setting, the icons are too small (for me, at least).
That's why I thought you were talking about terminal.
It's no big deal, I have it 4x6 now, but just to understand.

Thanks for your patience guys!