Declaration and quiz requirement in compliance course

I have designed a compliance course in Presenter and Quizmaker 13 that requires the learner to complete some content, then agree to a disclaimer that they have read a policy, then complete 10 assessment questions and achieve 80%.

At first I thought I could use the group feature in Quizmaker to make the declaration 100% or fail (group 1), and the remaining 20 assessment questions (of which 10 are included) set at 80%. I would force the learner not to continue past group1 if they did not tick yes to the declaration, thereby meaning the learner was unable to pass the course. However, when I went to set the pass mark in options, the options appears to be universal for both groups of questions/

I understand I could create 2 quizzes in the course (one as the declaration and one as the assessment), but I think I can only select 1 quiz as the 'track by assessment' quiz when publishing, so I dismissed this as an option.

Is there a way to achieve this design requirement?

Or, do I have to make the overall pass mark 100%, to incorporate the declaration requirement?

Thank you for any advice you may have.

Kind regards, Alison