In ZMODEM page, you can setup options related to ZMODEM file transfer.

Receives/Send files automatically when the remote ZMODEM program starts to send/receives data. When this check box is cleared, point to Transfer on the File menu, and then click Receive/Send ZMODEM to receive/send data.

Opens the Browse For Folder dialog box before receiving files. It allows you to specify a different folder for each download.

Stores the downloaded files into the specified folder without asking every time.

The downloaded files will be saved as the same name with the remote files. If the same filename is already used by another file in the folder, a unique number will be attached to the filename.
Ex) before: abc.txt, after: abc (2).txt

The downloaded files will be saved as the same name with the remote files. If the same filename is already used by another file in the folder, the downloaded files will overwrite the existing files.