Hi @Michele Grace Lessirard20
If you plan on sending them on a specific date, we suggest creating a sequence email for each of them and then use the event step on automation, so they receive it on your preferred date.
The guide below will show you how you can set this up. I would recommend that you check out this page; this guide will give you an in-depth tutorial with the feature:
Visual Automations: Events23
If you're having some trouble with this, I recommend you email firstname.lastname@example.org to take a look at your account.