In Logic Pro Sampler, do one of the following:
In Zone view, choose Zone > New to create a new, empty zone.
In the Key Mapping Editor, press and hold Command-Shift, then drag the pointer to create a new, empty zone.
A new group is shown in the Mapping pane and a zone is automatically added to the group.
This method creates a new zone with the selected audio file.
In the Key Mapping Editor, click a zone, then choose Zone > Load Audio Files (or use the Load Audio Files key command: Control-F).
This method associates the audio file with the selected zone.
Locate the audio file you want and select it in the File Selector window.