You can use Logitech Gaming Software (LGS) version 8.91 and later to assign G-key commands to the function keys on your gaming keyboard.

• Default function key layout
• Customize function keys
• Game-specific profile commands 
• Command Editor
• Reset function keys

Default function key layout
The default function key layout on your gaming keyboard utilizes the standard F1-F12 layout found on most keyboards. 

Customize function keys

1. Make sure the gaming keyboard is connected to your computer, and then launch LGS.
2. Click on the icon for your gaming keyboard.
3. Click on Customize Function Keys.
4. Click on the profile for the function keys you want to customize.
5. To assign a command to a function key, do one of the following: 
   • Double-click on the listed function key command assignment to begin assigning a new command. 
   • Drag and drop an existing command from the Commands list in the left pane onto a function key. When you drag a command over the function key, the function key area will become highlighted. 
6. You can also right-click on a function key or its assignment for additional options: 

   

   • Assign New Command — click to open the Command Editor window.  
   • Edit Command — click to open the Command Editor window. 
   • Unassign — click to remove all command assignments from the selected function key.

Game-specific profile commands
LGS can be used to create new or to import LGS preset game profiles for compatible Logitech gaming keyboards. These profiles allow you to create customized function key configurations for compatible games on your computer.

Once you select a game-specific profile, you can drag and drop standard, custom, or LGS preset game-specific commands from the Commands list onto the gaming keyboard’s function keys (where applicable). 

Command editor
You can use the Command Editor to customize function key command assignments on your gaming keyboard. 

1. Double-click on either an unassigned or assigned function key to open the Command Editor. You can create or edit a command using the following customization options: 
   • Keystroke — assign a single key press or a key press with modifiers. 
   • Multi Key — assign a "macro'd" series of keystrokes (either with or without recorded time delays). 
   • Text Block — create a block of text to be typed out when the function key is pressed (either with or without Unicode support). 
   • Mouse Function — assign a function key to use any of the available mouse functions. 
   • Media — set a function key to control media playback or volume. 
   • Hotkeys — use a predefined keystroke command. 
   • Shortcut — assign a function key to launch a file, folder, drive, or Web page on your computer. 
   • Function — assign a function key to act as a Microsoft function key (ex. to open your web browser). 
   • Audio — set a G-key to activate an audio command. 
   • Ventrilo — assign a function key for Ventrilo commands, if installed on your computer.
2. Click OK to assign the desired command to the function key. The command’s name will be visible over that function key in the Customize Function Keys window.

Reset function key assignments

To reset a single function key command assignment:

1. From the Customize function keys window, navigate to the Profiles area in the top-right corner.
2. Click on the profile for the function key you wish to reset.
3. Right-click on the function key and select one of the following options from the pop-up menu that appears: 
   • Use Generic — click to revert the selected function key assignment to its generic function. 
   • Unassign — click to remove all assignments from the selected function key. 
     NOTE: You can also remove all assignments aside from generic functions by dragging the current command from the function key to the trash icon (located at the bottom-right corner of the Commands list).

To reset all function key command assignments:

1. From the Profile area at the top-right corner of the LGS windows, select the profile for which you wish to reset all function key command assignments.
2. Right-click on the profile and then click All G-keys from the pop-up menu that appears.

   

3. Select one of the following options from the pop-up menu: 
   • Click Use Generic to revert all function key assignments to their generic functions. 
   • Click Unassign to remove all command assignments from all function keys. 
     NOTE: Gray-colored text menu items are not accessible.