Set specific date and time for sequences

Hello everyone,

I wanted to create a sequence for contacts who have submitted a form for a webinar with us.

However, there is no option in a sequence to set the sendout to a specific date or time.

I know that I could implement a workflow, but I would like to use 1:1 communication, which again is not possible with the hubspot workflows.

Background: I would like to set up a communication funnel that goes from registration until webinar and ends up after the webinar with an email with the recording.

For example, I would send a 1:1 email 10 minutes before the webinar, at the start of the webinar and 1 hour after the end.

Best regards