Step 1: Select the location where you wish to insert a Greek Letter
Step 2: Slide to the Greek Letter Keyboard. Use the button in the lower right part of your screen.
Step 3: Select the greek letter you need.
Step 4: Continue to use FastFig.
Short-Cut: Typing Greek Letters:
Greek Letters will only appear when in Math Mode. Either select it manually, or type a math symbol, such as plus or minus, after typing the name of the greek letter. (For how to select math mode manually click here)
Type the name of the green letter. Use a capital for the first letter of the name for a capital Greek Letter. Use all lower case letter for a lower case greek letter. See the example below: