Assuming this is an HP Quality Centre request, these are the available shotcuts as of version 9.2:
Test Lab Module Shotcuts
Test Lab Module
ALT+N - Creates a new test set
CTRL+A - Adds test to test set
CTRL+DELETE - Removes test from test set
CTRL+F9 - Runs test
CTRL+ALT+F9 - Runs test manually
CTRL+SHIFT+F9 - Continues manual run
ALT+F9 - Runs test set
Test Runner Module
CTRL+Q - Ends the run
CTRL+R - Begins the run
CTRL+K - Cancels the run
CTRL+U - Adds attachments to the test run
CTRL+B - Adds a new defect
CTRL+S - Adds attachments to the test step
CTRL+P - Passes the selected test run steps
CTRL+F - Fails the selected test run steps
CTRL+A - Passes all the test run steps
CTRL+G - Fails all the test run steps
CTRL+UPARROW/CTRL+DOWNARROW - Selects the previous or next test step
They may well have added more/tweaked some in later versions. Generally have a look at Appendix B in the user manual.
Edit - Expanding answer
To be clear my answer boils down to There is no documented way in QC to do this as of 9.2 (and I'm pretty sure that hasn't changed in 10.0).
As QC is a HTML based application you could view the html source to double check this for yourself, see the following to see how accesskeys/hotkeys are added to html: