Each fill gel grout pack should contain the shine remover, a white scouring type pad to take off excess grout, and a cellulose sponge to finish off. From memory one pack of grout is enough to do about 2msq and it tells you how long to mix for before applying (i do it with a cordless drill and small paint mixing paddle cos epoxy is thick) just stick to the instructions and you'll be fine. Apply the shine with a plant sprayer it'll go a lot further this way, and have a little in a rinsing bucket to keep the sponges as clean as you can although depending on meterage you should have plenty as its a new sponge with every grout pack. I know its obvious but dont start unless you have enough time to finish because you only get the one chance with this stuff. Once you've got the excess grout off and have a nice finish there will probably be a bit of a sticky residue on the face of the tiles, as long as its only a little residue you should be ok waiting until the next day when the grout has hardened then giving it another wipe over with shine and a clean sponge.
In case i've made the above sound overly complicated I find bisazzas epoxy a lot better/easier to use than the easypoxy bal do because of the shine solution.
Cheers
Lee.