You can create new distributions by:
Copying and renaming a distribution within the Distribution Gallery (Creating Distributions by Copying)
Defining a distribution in the Define Assumption dialog and adding it to the Distribution Gallery (Creating Distributions by Saving Assumptions)
To create a distribution by copying another distribution, follow the steps in the next section, Copying and Pasting Distributions
Then, you can rename and modify the new distribution as needed.
To create a distribution by saving an assumption:
With Crystal Ball running, click a cell in the spreadsheet.
It can be a value cell where you want to define an assumption or a blank cell.
Click the Define Assumption tool or choose Define, then Define Assumption.
Follow the steps in Defining Assumptions to select a distribution and enter parameters.
Choose Edit, then Add To Gallery in the Define Assumption dialog.
The Add To Gallery dialog opens, where you can name the new distribution and select a category for it.
Click OK to save the distribution in the selected category.
If you created correlation data, it is not saved although the distribution type and any parameter settings are saved.
Now, the new distribution is available for use just as another other distribution, either supplied with Crystal Ball or user-defined.