How to change the way Categories are listed

Hello Sirs,
Is there a way to change the way Categories are listed?

Normally, Categories are listed in alphabetical order and that is not handy. For example, I have a category Country with 8 child categories. I would rather have it at the end of the Categories list for convenience.

I also think that plugins (like, related posts and the like) treat categories as per their order. It would be better if I could change the way categories are listed.

I wish to at least make some 4 or 5 Categories be on the top of the categories list.

Is there a way to do that?
Or, is it an advanced and/or a risky endeavor?

Thanks for the help.