Favorite on Launcher

[Grizzly]

Hi Again

I'm still having trouble putting (wine app) as favorite on the launcher of 
Fossa.

In Bionic I just made a app.desktop file, put it in 

.local\share\applications

and all went well even when the icon image was on a second drive (it only 
appeared when that drive got mounted)

Searching around on the net I'm told to put the app.desktop in 

usr\share\applications

but even then nothing shows on the launcher

I know (or think I know) that once it is running I could just right click the 
(tempory?) launcher icon and "Pin favorite"  

My problem is a "Catch 22" the app wont run without cmd line switches. so 
without the app.desktop it wont run and without running (it seems) I cant get 
the app.desktop

Can anyone help