The best I can figure is this.
In the recent past there was a place, or button to press if you wanted to push a domain from one Dotster account to another.
That has apparently been removed sometime in the last few months.
I think now you must contact customer support to do this.
Good luck with that.
About a month ago I contacted their support and spoke to someone who, believe it or not, did not know how to do a push.
They transferred me to tech support, and after an hour or so of waiting I was disconnected and never got an answer.
I still have no clue how this works.
I don't know what will happen if I sell a domain to an end user that is still under a 60 day lock and can only be transferred with a push.
If any one else knows about this or if you have successfully contacted customer support and pushed a domain recently please tell us about it.
We all really need to know about this.