Quiz/ module completion setting - Captivate 2019

What is the percentage built on? Is it 80% of the total number of slides? Is it 80% of the (developer's) duration of the course, which would be the same as 80% of the total number of frames? Do you have branching scenarios in the course? Only some of the questions that pop up to me when I read your request. Anyway neither of those criterion will even guarantee that the learner didn't just click Next without ever having looked at the content of the slides. Sorry about that cynical comment, but I consider forcing adults just to visit slides is not the real goal of any learning asset, it is learning itself which is important. The big fear about ChatGPT in higher education institutes wouldn't be necessary if they didn't rely on older educational principles since decades.

Captivate has a possibility to set the % of slides as Completion criterion in the Reporting section of Quiz Preferences as Rod points out. But some LMSs do not 'understand' that criterion very well, which Rod points out as well. Please try to work with the LMS managers and test a lot.

One very simple method to achieve what you describe is to configure the SCORM settings in the Captivate module to award completion based on the percentage of slides the user visits.  For example, if there are 100 slides in the project, then you might set the slide completion percentage to 80% or alternatively set the number of slides visited to 80.  However, it is usually wise to build in a "margin for error" in case there are some slides that the user might never visit (e.g. slides that explain how the navigation works).

One downside of the above method is that some LMSs prefer to see some kind of scoring and do not successfully record modules based on slide completion.  So the more preferred method to do this is to just add a scored button somewhere near the end of the module and make sure that the participant MUST click that button in order to complete the module.