How to send second reminder emails to the approves for attestation?

Did you have a look at the documentation:
Reminding attestors

Thank you for your reply Niels.
Yes I checked the documentation but it is not clear how to proceed.
Sending a regular reminder is easy, but my need is to send it not at regular intervals. Let me explain further:
my attestation for example has a duration of 30 days
- first reminder when it is 7 days before the deadline
- second reminder when there is 1 day left until the deadline

Maybe you can create 2 daily process plans that fire the event REMIND@AttestationHelper
this will start the proces: VI_Attestation_AttestationHelper send mail to remind approver
(Sends an email per attestation case to remind approvers that that there are pending attestation cases)

Example conditions one for each proces plan.

-- 1 day left until the deadline
UID_AttestationCase IN (
		SELECT UID_AttestationCase
		FROM AttestationCase
		WHERE ToSolveTill >= CAST(GETDATE() AS DATE)
			AND ToSolveTill < DATEADD(day, 1, CAST(GETDATE() AS DATE))
			AND IsClosed = 0
		)

-- 7 days before the deadline
UID_AttestationCase IN (
		SELECT UID_AttestationCase
		FROM AttestationCase
		WHERE ToSolveTill >= DATEADD(day, 7, CAST(GETDATE() AS DATE))
			AND ToSolveTill < DATEADD(day, 8, CAST(GETDATE() AS DATE))
			AND IsClosed = 0
		)

Thank you very much for the suggestion and I will proceed in this way that seems to me the most immediate way

Thank you very much for the suggestion and I will proceed in this way that seems to me the most immediate way