Have you watched the xAPI Overview for Lectora yet? Watch it Now!!!
In the checkbox knowledge check scenario, the learner reads a short scenario from the left of the screen, then checks the boxes that relate.
When they press submit, we run an action group to check their answer, do a few templatey things, and send an xAPI statement that looks like the following.
We send a separate statement for each checkbox they checked.
To edit these statements, open the Submit Button Action Group, and select a Send Statement action, then open the Action tab in the top ribbon.
From here, you can edit the details through Lectora's interface or add custom values.
After edits, you just need to publish your file to xAPI to get statements going to your LRS.