Stock daily close data with null in the weekend

I’m try to make stock trend with line chart. Here are some problems I have found:

  1. The X axis id second base. How to adjust to Daily metric?
  2. How to remove weekend/holiday in X axis? At least 2/7 data are empty.
  3. I want to browse daily-trend(e.g. one month ) and second-trend graphic(e.g. 8 hours) in the same dashboard. But I can only choice only one time range for both line charts??

To begin, I would take a look at the FinnHub Datasource and see how that plugin is handling these sorts of issues.

And here is the FinnHub API: