[Mailman-Users] Can't figure out if I set up mail list correct

I set up a mail list. (I think) I tried to set it up so everyone rejects if they send to the list. We want to be able to have just one person send to members, but in one direction only. I then set it so the moderate required was NOT checked on my own email address. If I then send an email to

[Mailman-Users] How do you add a list of addresses to mailman list?

I have tried to search for this and figure it out from the edit options, but I am at a loss how to do this. We have a list of emails from our professional association in an Excel spreadsheet. I want to subscribe the 200+ members to our membership mail list. How can I do this? Thanks! -