When I use it, I first create a job and add it using the add job button. Next, I open the replicate pages function and the job (or jobs) I previously created are listed there. I just check off the one I want to replicate pages for and it does it. When I go to submit, it again lists the jobs, so I select then one to submit (after having uploaded the pages of course) and push the submit button. All done.
Since you can select the sites to submit to when you create the job you have to follow the rules regarding multiple submissions yourself. Most of them are still allowing more than one submission per webmaster per day, so you shouldn't get banned for that.
However, I don't suggest you spam the TGP's with multiple galleries daily. Two a day should be plenty. Personally, I won't list more than two galleries per webmaster (not domain) per day, so that should be a good rule of thumb to follow for now. Try to be fair to everyone else that is submitting and you'll all get a chance to get galleries up.
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The Webmaster's Folder