To Attach a Design Script in the Print Dialog

Select File > Print > Print. The Print dialog opens.
Do one of the following:

Select Resymbolization > Attach Design Script.

or
Next to the Design script control, click the Attach Design Script icon.

The Select Design Script File dialog opens.

Note: The dialog opens to the folder specified by the configuration variable MS_DESIGNSCRIPT_PATH.
Navigate to the desired folder and select the design script you want to open.
Click Open.
The Select Design Script File dialog closes.