For the event you can use a trigger volume in your map.
To play a sequence you have to use the sequencer, add level sequence or master sequence, I really don’t know about imported anims.
If you use the sequencer add the ref to your levelBP by clicking it from your world outliner and right clic in the levelBP with content sensitive on, then play, reverse, stop, do whatever you want to do from here.
If you want a trigger volume you can do it like this: (Y bool is if the player swing his sword or whatever you want if you need it) if this is a special event you need to call from your character you can use an event dispatcher
but once again if you imported the anim from somewhere else, I don’t know how to play it.