When working in Microsoft Office, I use a lot of keyboard shortcuts.
Use <shift>F3 to change the case of a word.
Notice that my name is not the ideal name for this because it won’t capitalize the C in Causlin.
If you put the cursor by a particular letter, just that letter is changed by <shift>F3.
So, if I put the cursor by the c in causlin, I can change it to McCauslin.