You can input bars/beats using the bars and barlines popover, both during note input and by adding them to or inserting them into existing music. For example, if you want to extend a cadenza in an open meter.
Prerequisite
If you want to input bars, you have input a time signature.
Procedure
Result
The number of bars or beats specified is input.
During note input, bars/beats are input from the caret position. If the caret is in the middle of the bar when inputting bars, sufficient beats are added to ensure that the final bar created has the correct number of beats. The caret position stays at its previous position so you can continue inputting music from the same position.
When you add bars/beats to existing music, they are added after selected barlines and before other selected items, including time signatures.
Another way to add bars is by choosing a note duration, such as a whole note when in a 4/4 time signature, and pressing Space repeatedly during note input.