Input methods for bars and barlines
You can input both bars and barlines with the keyboard by using the bars and barlines popover, and also with the mouse by using the available options in the Bars and Barlines panel. Additionally, you can input bars using the system track, which allows you to input other rhythmic durations, that is, a specified beat region.
Normally you do not need to create bars in Dorico Pro, as they are created automatically as needed when you input music. However, you can add bars in advance if, for example, you are copying or arranging an existing piece of music.