|Open AVID Media Composer|
Then open Media Composer
click on "New Project"
then click on the folder icon to navigate to where you want to save your project then
Name the Project "Whatever you would like"
Set the Format HD 1080 > 1080 23.976
Color Space YCbCr 601
Or another common project size is 4K or UHD
Format: UHD 23.976
Ultra HD > UHD 23.976
Color Space default 709
Then Click on Create
All the way at the bottom of the screen