Early Action (EA) admission plans typically have an earlier application submission deadline than Regular Decision. EA plans are not binding. You can apply to as many EA college as you like, unless you are applying somewhere Restrictive Early Action (REA), which limits you to one early application total.
You’ll have to do a bit of strategizing around the various early admission options for your slate of schools. There's no one right answer here for everyone, so think through your options carefully and decide what level of risk you’re willing to take.
Note: if you're not seeing the EA option in the drop-down menu, check to see which start (or entry) term you have selected. If a college offers EA and also offers more than one start (entry) term, you might not be able to to apply EA for anything other than the Fall term. In that case, the EA option will disappear from the drop-down after you have selected that alternate start term. It should reappear if you pick the Fall term.
Recruited athletes are often encouraged to apply early. Artists who are applying to programs with auditions or portfolio reviews as conditions for admission are often prohibited from applying early, or they might not given a decision in the early round. If you are a recruited athlete or are submitting a required arts supplement or portfolio, contact the college and find out if there are special rules that apply to you with respect to Regular vs. Early.