How to overlay "events" on a chart?

Hello,
I am trying to do a visualisation with data from Dataiku – my question is if there is any way to overlay some custom text “events” on my charts. Effectively something like this: https://us.v-cdn.net/6038231/uploads/TOODBPF4VT2E/timeline-combinations-bar-chart-2.png

I don’t need anything too fancy, my use case is that I am plotting some attributes, let’s say # new users and I want to manually mark some events, eg “marketing campaign x” etc

thank you!

Bokeh has both labels and arrows that seem relevant.