Setting hashtag for all picture of a unique event

Hello everybody,
If i would like take photos during an evenet there is a way to put hashtag (with the name of the event) to all the bunch of pictures i upload?

Thank you

Unfortunately not. It is possible to tag selected features on a picture, but you cannot add your own and it is a manual process with a mouse. But such a tagging feature could be nice. I once made a prototype, but never got the time to do a final version.