From The Document Foundation Wiki
How to change the keyboard shortcuts?
From any application, you can modify the shortcut keys:
- ▸ ▸ .
- Using the radio button at the top right of the window, select the module for which you want to change the shortcuts, or select LibreOffice to apply the new shortcuts to all modules (Draw, Calc, Impress and Writer). You can change the shortcuts for only one named module at a time. To change the shortcuts for another module or all modules, you must reopen the dialog box.
- Select the category of functionality.
- Select the function.
- Select the shortcut key that you want to apply to the functionality.
- Click the Modify button.
- Change as many shortcuts as needed.
When you are finished, click OK.