You want to add a custom launcher to the Alacarte menu (main menu).
Click the Trisquel icon in the lower left of the bottom panel. Click System
Settings. Click Main Menu. Highlight the list in the left column where you
would like to place your new launch icon. Click the + New Item in the right
column. Type the name you wish to use. Click the Browse button. If you
already searched the files as I explained in the previous commnet above, the
program you seek will be listed in the Recently Used items. Find and Click
that program. Click Open. That window will close. Click on the icon in the
upper left corner. Click the share button on the top row. Scroll until you
find your program folder. Open that folder. Click the Logo folder. Select the
icon pic. Close everything. Your new program launcher is now available in the
start menu.