Learner needs to exit and finish later - what happens?

Hello,

I tried searching this, but no luck.  It seems like and easy default somewhere - but I can't find/remember how this works.

Can someone help me understand what happens when/if a learner is taking an eLearning course and needs to exit out for some reason.  When they come back in, I am assuming that they will pick back up where they left off.  Is this a setting that I can control?

Example:  Participant starts the eLearning course, phone rings and he/she has to deal with an emergency.  He/She exits the course and decides to finish later.  "Later", he/she goes back into her LMS and re-opens the required course.  Where does it start 1) Beginning 2)Where he/she left off?

Thank you in advance,

Heather