Fixed Split dialog box

How to get there

Choose File > Open and select MIDI File from the File Type drop-down menu.
Double-click the name of a MIDI fileA type of file written in a standardized format that can be understood by music programs from different manufacturers so that one file can be used in several different programs. For example, music created in any sequencer program can be opened by Finale and converted into written notation. you want transcribed.
In the Import MIDI File Options dialog box, click Set Track-To-Staff List.
In the Track/Channel Mapping to Staves dialog box, click the top unassigned row of track/channel mapping information.
In the text boxes at the top of the Track/Channel Mapping dialog box, enter the track numbers and MIDI channel numbers of the "tracks" you want to split.
Click Fixed.

What it does

In this dialog box, you can specify up to four split points for the music in the sequencer track (or tracks) you’ve specified for transcription. In each pair of text boxes, you specify a range of notes you want to appear in a separate staff. You could, for example, include only the notes in the flute’s register to place in one staff; only the notes in the bass’s register to put in another, and so on. You can even specify overlapping split ranges so that some notes are transcribed more than once.

Noteman says: You don’t have to calculate the key numbers and type them in manually. Click the Listen button (see below) beside each pair of text boxes, and play each note—the lowest, then the highest note in the range; Finale enters their key numbers in the text boxes automatically. You can split the notes of the track (or tracks) you’ve indicated into as many as four separate staves this way. These staves will appear in the same top-to-bottom order as these pairs of text boxes.

Key Range: Low • High. In each pair of Low/High text boxes, enter a low and a high key number, where middle C is key number 60, and the numbers increase sequentially as you move from left to right on the keyboard. The notes to which these synthesizer key numbers refer—and all notes in between—will be split into their own staff.
Listen. When you click this button, Finale goes into "listen" mode, waiting for a MIDI signal. (A message to this effect appears on the screen.) Simply play the desired key on your keyboard; Finale enters the appropriate key number in the active text boxes.
Split into ___ Staves. After indicating all the desired ranges of notes in the text boxes (see above), tell Finale how many resultant staves you want by entering the appropriate number in the Split text box (1 to 4).
OK • Cancel. Click OK to confirm your split points, or Cancel to discard them, and return to the Track/Channel Mapping dialog box. In the Split column for the row you clicked, you’ll see Fixed (if you clicked OK) or None (if you clicked Cancel).