Billboard is now built and 'festooned' with work for you to come and have a look at and, if there are any you like the look of a chance to propose exchanging a piece of your work for one on the billboard.
What you need to do is prepare (in your head) an argument for why it is a good exchange. Also where it will go on the bb - perhaps work will need to be changed around in order to accomodate your work? As such you will become an associate curator of the billboard.
Your work will remain on the bb until such time as someone wishes to exchange their work for it, and at the end of the show the work is forwarded on to the owner of the orignal work.
Clear about that?!
Right, all you need to do is speak to someone on the desk to find out when I will be on site -at the moment it is Monday & Fridays 11 - 14.30 and Wednesdays 14.30 - 18.00. I'll probably be around at the weekends but at present not sure when.