Protecting data area from copy

I have done this before but do not recall how to do it again

I want area a1:c10 in mode that the mouse wont reach

Advice the steps

Found

Select all cells CTRL 1 , protection , uncheck locked
Select only those cells for unchecking selection
CTRL 1 , protection , check locked
Review Tab , Uncheck locked cells and let Select unlocked cells remain
Put password after clicking okay that range can not be selected