One way to do this at the Report level is to change the format for the outputs in your report and then save to a Platform Preset in JMP 18.
To set this up, go to the report, right click on the column values in a table and select: Format Column... and change to Fixed Decimal: 2. For example, the Summary of Fit report will look like this:
In JMP 18, you can now click the star icon in the top right of the report to save this as a Preset.
Now, whenever you run Fit Model, you can select the Preset you created and all the report customizations will be applied:
-Scott