Interrupting 'project in project'

[myndeswx]

Hello, could anyone share an example how to interrupt a template by timeout (from shared code)
I have a 'main' template, and several others running as 'project in project'.
The 'main' template has a execution timeout set in settings, but with new chromium 'project in project' templates sometimes load for very long time, and I would like to set a timeout for each of those individually.
Thank you.