No such feature is available.
However, by using the Training feature or Task feature, you can obtain useful reference information about whether a Manual has been read to the end.
Alternative
By using the Training feature or Task feature, Viewers of a Manual can press a button to indicate that they have read the specified Manual.
In order to press this button, the Viewer must read the Manual all the way to the end.
Button image (Task feature in the Web Browser version)
Therefore, by making use of the Training feature or Task feature, you can obtain useful reference information about whether the target Manual has been read to the end.
However, this is not a feature that detects whether a Manual has been read to the end based on some form of data and prevents the button from being pressed unless it determines the Manual has been read to the end.
For more accurate tracking of Manual completion, we recommend additionally asking Viewers to press the button only after reading the Manual to the end.
In addition, when using the Training feature, you can export to a CSV file the status of Viewers who have pressed the button (course completion status).
However, as this is a beta feature, your agreement to the "Beta Terms of Use" is required to use it.
Related: [Beta] Download the progress summary of a training course.
https://teachme.jp/8/manuals/16437711/
Notes
Depending on your contract plan, an additional Option may be required to use the Training feature or Task feature
For information on which plans support each feature, please refer to the articles below.
Related: Tell me about the Training feature
https://help.teachme.jp/hc/en-us/articles/7441713539993
Related: Tell me about the Task feature
Tell me about the Task feature
"Views" does not represent the number of Views for Manuals that have been read to the end
The "Views" figure available through each Report feature or the Group management "Usage status" represents the number of accesses to the target Manual.
Therefore, it is not a suitable indicator of whether a Manual has been read to the end.
Related: View manual views report using report function (Web Browser)
https://teachme.jp/8/manuals/6684384
Related: View contract details and usage status (Web Browser)
https://teachme.jp/8/manuals/7584314