I didn't answer your question because I thought it was inappropriate, and I wagged my finger for exactly the reasons that Endlessness mentions above. I put "giving" in quotation marks because it sounded like a question that someone extracting for profit would ask. If this isn't the case, I'm glad to know it - but your overall message is still shifty.
To all who are new to this wondrous substance and have thoughts of sharing with others, I urge you to consider the following with all due seriousness beforehand:
You alone are responsible for every grain of spice you extract. Every person you introduce it to is now your responsibility. For however long they continue to use it, for whatever integration issues pop up later in their lives, for whoever they in turn introduce - it's all now on you, dorm room shaman - so you might want to know what it is that you're giving before you start giving it out...
If you haven't done this, you have no idea the amount of power it contains - and you certainly don't have any business in giving it out to others. If, as you say, the people you're giving to have actually used it before, why would they need someone who hasn't to tell them how to do it? DMT is a life changing event - but it isn't always a positive one for everyone who tries it. If you disregard the potential to harm, you're either a fool or don't care.