Hi Incarnate,
"but it is stated that two units must be done in each week."
no. They can be done in a week, if that's your pace. Two units a week is our recommendation.
Each unit consists of a lesson text, forum, and quiz.
" And I am sure this one has been answered somewhere else, but what happens if someone enrolled in the course doesn't finish it in an allotted amount of time?"
Nothing happens, because there is no "allotted time" for the course in the first place. :-)
BTW it makes sense to use the course's technical questions forum for questions about the course. Here in the General Open Forum there are no lesson units, so infos about course lessons do not make much sense here.
LVX
Andrea