1.) You don't need to send the scores out individually, the ADA does that. It takes about 2-4 weeks for the schools to receive them (based on what the website and OAT guide say). If you've spoken to any advisers or recruiters via email, sometimes they ask you to send your unofficial score sheet (the one you get once you've finished the test).
2.) Transcripts received by OptomCAS are sent to each school you pay to apply to. You don't need to send them twice, even if the school has a supplemental application. That processing takes a couple weeks too.
I only know this because I'm applying this cycle too. Hope everything goes well for you.