Sunday Ticket Will Be Priced At $300/Year With A Possible Cheaper Single Team Option

So I purchased Sunday ticket

How do I actually use YouTube tv, just log on on Sept 9 the my account and the games will be there? I don't have full yttv, just the Sunday ticket. Or is there a separate Sunday ticket app?

I don't want to scrambling at 1150 on game day to figure out how it works. Tia.