How do you make an arrow barrage in Minecraft using command blocks?

To create an arrow barrage in minecraft using command blocks, place a repeating command block set to "Always Active" and use the command /execute at @e[type=arrow] run summon arrow ~ ~1 ~ {Motion:[0.0,0.5,0.0]}. This command will summon arrows above each existing arrow, creating a barrage effect. You can also adjust the Motion values to change the trajectory of the arrows. Make sure to set a chain command block to execute after it, if needed, to enhance the effect or control the barrage's duration.