October ACT and ED

I’m applying ED to Dartmouth. On Dartmouth’s website, it says that they accept the October ACT for early decision admission.
How does that work? Do I submit the common app before November 1, and then send in my scores later (after November 1)? Is it okay to send scores after the November 1st deadline? I won’t be able to self report the October ACT on the Common App as I won’t get my scores on time.
Would appreciate some guidance.

Check the Dartmouth website and if the answer isn’t there call or email Dartmouth admissions office to find out.