Target path rule
See The Target Path Rule Dialog for information about target path rules.
If you have already defined a target path rule for the new source files, select Use existing target rule and then select the rule from the dropdown list.
If you select Create a new target rule, a new rule will be created now. If, for example, you are adding all of the files in a folder structure, you should create the Copy folder rule. With this rule, a copy of the folder along with all of its subfolders is created for each target language.
Click OK to add the selected files now.