So, your Venue table has a Venue ID, and the Events table also has a field, VenueID, which shows the venue that event was at? Then you would be able to draw a portal in Venues exactly the same as you have, but in reverse, from Events?
But I'll guess that you can't because you don't have a single 'VenueID' on every Event record, because there is no concept of a single VenueID for a band - they play at many venues. I am guessing that when you are in the Events table and you choose a VenueID it is a global field - it doesn't really belong in any sense to the particular band you are looking at. Or if it does belong to that band, it is only for this one Venue they are playing this time. Next time you'll have to change the VenueID, which is not what you want to have to do.
What you need is a join table. Effectively it sits between Venues and Events, and has two working fields VenueID and EventID. It lists every event that took place at each of the venues. It can have other data too, obviously, like the date of the happening.