How to install SW properly !?

[SYNass IT Ubuntu / Linux]

Hello everybody
I recently installed a program called Sweet Home 3D !
The installation went smooth and I am able to play with it !! ;-)

What I absolutely dislike is that the program icon is simply thrown to
the desktop !!! ;-((
How do I get this into "Applications" i.e. into a new section like
Trials ???

Your assistance and suggestions are very appreciated. ;-)
TIA and cheers, svobi