Family Historian problem

[Top-of-the-hill]

  I need to start a separate tree for a different family and despite having done it quite recently, I cannot work out how to do it now. I have quite an old version, and need very basic instructions.

[Isabel H]

 Click on File - Project window - New Project - start new project (no import). 

[Top-of-the-hill]

  Just like that! Thank you so much.