In the dialog box that you chose to open, select Language Pairs > All Language Pairs > Batch Processing > Pre-translate Files from the navigation tree.
Note: Typically, you specify these settings at the All Language Pairs level, however, If you want to use different pre-translate settings for an individual language pair, select Language Pairs> [Source Language Name - Target Language Name] > Batch Processing > Pre-translate File from the navigation tree.
Choose the appropriate Pre-translate settings for your project. If you want to use automated translation results for the segments that do not have an acceptable match in the selected translation memories, enable the Apply automated translation option under the When no match found section.
Click OK to close the Options, Project Settings or Project Template Settings dialog boxes.