I have a little question. I added a new PC to our Domain and I see it in our AD but I don't see it in our ePO. So, how often synchronizes the ePo with the AD?
And can I configure it?
You can create an AD sync task.
Menu=>Automation=>server task, create new server task. Under Action, select AD/NT domain sync, select the sync group when you would like AD machines to import and schedule it.