Is there any way to add a keystroke (numlock, insert, end, home, etc) to the text context menu so i can use a few mouse clicks for that function rather than the keyboard?
Most of these tasks are related to the operating systems, but not to the LO.
The END, HOME (Jump to the begin/end of the document) is achievable by macros. And you can assign the macro to the desired context menu (there are many context menu versions in the applications)
You didn’t describe why you want to add a keyboard accelerator (in terms of author task). And your question is contradictory: you want to use mouse clicks instead of the keyboard. No keyboard accelerators are needed to use the mouse!
I have the feeling that you want to direct format your text through some context menu. This is wrong because direct formatting will always play nasty trcks on your back. Instead, style your text. You then separate contents from appearance and you gain a dramatic power and versatility on your text.
thank you for your suggestion