Hi Luke,
In the version 13.3 of Design, we added a new feature which is the Lock/Unlock feature. This new feature has taken the place for the Ctrl+L shortcut.
If you wanted to add a ‘custom’ shortcut to Design, follow the below.
1. Click on the down arrow on the shortcut tool bar and click on ‘More Commands’ -See image below
2. In the next window, click on ‘Customize’
3. Choose the category on the left and then the command on the right, click in the field for ‘Press new shortcut key’ and click on the keys that you would like to make the new shortcut. – See image below
If you simply want to create an incremental save without setting up a new shortcut, you can click on File > Save as > Incremental Save
Hope this helps!
Kris