The ANSYS Options dialog is used to specify values for settings related to the interface to ANSYS structural analysis program for 3D thermoplastics analyses.
The Separate finite element mesh for mold option is set to No by default. This means the part mesh will be used as input to the interface.
You can set this option to Specify it. You will be prompted to specify the file containing the 3D mold mesh you wish to use as input to the interface, and to choose what part data (pressure history, temperature, or both pressure and temperature data) will be passed to the mold mesh.
To access this dialog and specify settings for the current study, ensure that you have selected an analysis sequence that includes Fill+Pack, click 
(), if necessary click Next one or more times to navigate to the Fill+Pack Settings page of the Wizard, click Advanced options, click Edit in the Solver parameters group, click Interface (tab), and click ANSYS options.