You can also do it in this way:
Enter the same beamed notes twice, in Voice 1 and Voice 2.
Extend the 8th note beam inwards from either side in Voice 1 and Voice 2.
To access the Voice 2 beam handles more easily, extend the stems in Voice 1 temporarily (= while you are shortening the Voice 2 beam), by using the Beam Angle Tool:
Select the left handle, and move it up.
- Beam Gap1.gif (14.47 KiB) Viewed 3308 times
- Beam Gap2.gif (3.2 KiB) Viewed 3308 times
Finale 2014d, 2014.5 & v25.2, Mac OS X 10.12.3, Finale user since 1996