Plotting events like data


I am wondering if it is possible to plot a set of “events” in Graphana.
An event looks like a data with an activation timestamp and a recovery timestamp, for instance
eventA 2019-09-09 09:00 2019-09-09 10:00
The event above last just 1h.
tact = 2019-09-09 09:00
trec= 2019-09-09 10:00

The chart should be similar to a square line
tact trec
| |____

As far as I have understood there is no plugin fitting this purpose and a maybe new one could be developed, if so from which existing plugin I can start?

Thank you,