By batch, I am assuming you've been given a file called extra.dat.
In EPO 4.5:
Menu, Software, Master Repository.
Actions, Check-in package.
Select "extra.dat" and browse to extra.dat you've been given.
Ensure you replicate your repositories (if you have more than one).
Also check the update task is set to update extra.dats:
Here's the McAfee technote for 4.5