At the moment, if user looking at build page in UI, he sees
"Subproject Builds" and then list of builds that were triggered by parametrized trigger plugin.
Unfortunately it shows only builds that are already completed, and no information about blocked in progress jobs.
I understand, this is because of limited availability information done by function
It should be possible to show also other triggered builds that are currently "in progress" by something similar to following code below in groovy:
PS. sorry, I'm not very good in java programming, otherwise I'd do just pull request to improve
getTriggeredBuilds() in hudson.plugins.parameterizedtrigger.BuildInfoExporterAction directly.