I've created an area chart, illustrating the status of many media players throughout a single day. The data has a granularity of one minute.
I want there to be a major gridline at every hour, and a minor gridline at every half hour. I cannot see where you can set the "step" of the grid line.
Here's how I'm currently setting it up:
And it looks like the attached image. In this image there are so many lines that they stop serving a purpose.