Share y-axis when adding multiple line resources

[DavidLegg]

Checked for duplicates

Yes - I've already checked

Alternatives considered

No - I haven't considered

Related problems

This may be part of #781, but I'd like to call this out specifically.

I was using the "Add filter to row" function to build a row of related resources like this:

That mostly works great - I love the way it assigns colors and sets everything up really quickly. However, it puts each resource on its own axis, when I'd expect them to share a y-axis. This leads to a misleading display at first glance, because I didn't realize everything was on separate axes:

Describe the feature request

When adding multiple resources to a timeline row, especially if that's a new row, I'd like all the line resources to share one y-axis.

[mattdailis]

In the meantime I believe you can edit the row in the timeline editor and manually set each axis range; but that's fair bit of work for something that's likely a common use case 👍 Thanks for opening this issue