Hi Angela, welcome to the MEPD, your gear suits you well and you look great.
The wire is supposed to hold the T-tracks, so - as you see in bigwam's reference pic - it shold go around the tracks, to hold them in place, you will need to add some small notches on those tracks, in which the wire can fit. It's easiest to add those notches by using a drillbit with the same size of the wire. But be careful not to damage that awesome RS rubber foam DLT of yours.
You'll be approved in no time.