How to switch to Symbol font for fast typing of Greek alphabet

Typing mathematical symbols like Greek alphabet takes a lot of time. To resolve this issue you can switch to Symbol font and use the corresponding Latin letters to enter Greek letters.
symbol

    1.    Change the selection to the Symbol font with CTRL+SHIFT+Q.

    2.    Use symbols like normal font (E.g. in Symbol font keyboard button "a" equal Greek letter "α", keyboard button "b" equal Greece letter "β", "c" -> "γ", "d" -> "δ", "e" -> "ε", ..., "l" -> "λ", "m" -> "μ", ..., "w" -> "ω" etc.)