- Click Tools
tab
Customization
panel User
Interface. 
At the command prompt,
enter cui. - In the Customize User Interface Editor, Customize tab, click the plus sign (+) next to Keyboard Shortcuts to expand it.
- Click the plus sign (+) next to Shortcut Keys to expand it.
- Click
a shortcut key.
In the Properties pane, the properties for the shortcut key you selected are displayed.
- In
the Key(s) box, click the […]
button to open the Shortcut Keys dialog box.
- Hold
down the modifier key CTRL with a combination of SHIFT and ALT if
desired and press a letter, number, function, or virtual key. Valid
modifier and key combinations include the following:
- Function (Fn) keys containing no modifiers
- Number Pad (NUMPADn) keys containing no modifiers
- CTRL+letter, CTRL+number, CTRL+function, CTRL+virtual key
- CTRL+ALT+letter, CTRL+ALT+number, CTRL+ALT+function, CTRL+ALT+virtual key
- CTRL+SHIFT+letter, CTRL+SHIFT+number, CTRL+SHIFT+function, CTRL+SHIFT+virtual key
- CTRL+SHIFT+ALT+letter,
CTRL+SHIFT+ALT+number, CTRL+SHIFT+ALT+function, CTRL+SHIFT+ALT+virtual
keyNoteThe virtual keys that are supported are Escape, Insert, Delete, Home, End, Page Up, Page Down, Left Arrow, Right Arrow, Up Arrow, and Down Arrow. The virtual key Escape can only be used by itself or with the modifier combination CTRL+SHIFT+ALT.
Below the Press New Shortcut Key box, Currently Assigned To displays any current assignments for the key.
- If you do not want to replace the current assignment, use a different shortcut key. Otherwise, click OK to assign the shortcut key and close the Shortcut Keys dialog.
- In the Customize User Interface Editor, click OK.