If you want ScangearMP to appear in the Dash, you can create a .desktop file for it.
Copy the following into a text editor:
[Desktop Entry]
Version=1.0
Name=ScanGear2 MP
Comment=Cannon's scanner software
Exec=/usr/bin/scangearmp2
Icon=/usr/share/icons/gnome/256x256/devices/scanner.png
Terminal=false
Type=Application
Categories=Utility;Application;Graphics;Scanning;
Save the file with filename scangearmp.desktop
To use the desktop file from the Dash you will need to copy it to /usr/share/applications for any user to be able to use it (you will need administrator permissions) or to ~/.local/share/applications (where ~ means your user directory) if you just want it to be available for one user.
Source: adapted from Canon (MG 5350) scangear doesn't appear in dash