How do I make two prints at the same time of the same file.

I wanted to save some time and do multi prints of the same sugar skull instead of doing it just one at a time.

So my question is can this be done? and if so How do I do in with the Rep g software.

Your slicing software will most likely have an option of duplicating your object. Slic3r and Cura have this feature.

ok I'll have a look, I am way new to this so my knowledge is limited.
just using the re G that it the Flashforg comes with.

Do you have any 3d software? If so, you can always place as many copies of the part in an array that fits the bed and then write them all out as a single .stl file. Then just import it, slice and print.

Otherwise, MeoWorks is correct. Most slicers allow you to do that pretty easily. In fact, in Cura, if you just keep going back and reloading the same file, it will move the one on the bed over and place the new one beside it. You can do that as many times as you like until the bed is full.

So if I Dl and install Cura do I use that instead of Rep G or is that more like an add on?

Cura is a fully functional slicer and will generate your g code for you :)