I'm writing a funding proposal and have used pgfgantt to make a chart of timescales for personnel hiring and work package developments, but I would also like to be able to indicate the plans for timing of several group meetings, etc. through the period of the project.
I would like these to appear in the way that pgfgantt displays milestones, i.e. points at a single time rather than bars indicating a time range, but there is no reason that they should appear on separate rows in the chart.
In the documentation and all examples, I only see how to mark milestones one-per-row. Is there a way to mark several milestones on a single labelled ("Meetings") row?