Excel Timeline - with milestones

Hi All;

I'm struggling to work this out, what i need to produce in Excel, is a timeline for deliverables, in this case we have designs.

For each deliverable (1 row in excel) i have 4 dates (columns), Baseline Design Issue, Current Design Issue, Baseline Construction Start, Current Construction Start.

What i need excel to do is plot each of these 4 days on a timeline, as 4 milestones, but i have no idea where to start in terms of the formulae needed.

Any help on this would be appreciated. I tried to add a pic of what im after but cant get it working.