Last Day to drop summer sessions without fees

<p>I noticed it is say: UC students who enroll in any UCLA Summer Sessions class(es) and later withdraw (drop all classes) are responsible for a $150 nonrefundable processing fee.</p>

<p>When is the last day to avoid $150 fee? Is UCLA Summer online class part of UCLA Summer Sessions class?
Can I keep the online class but drop all other in class lectures without $150 fee?</p>