MavinasX,
Thank you for considering MyEclipse.
Ideally if you want to work with MyEclipse on two different machines at the same time, then you will need to buy 2 licenses. You can make do with a single license only if you can work with MyEclipse on one machine at any given time.
You can send an email to subscriptions@genuitec.com to buy the licenses.
Let us know if you have any further questions.