I do not see any other way to get the dialogue box if you do not want to use the form. System always prints to the default printer or last used if you setup last used option.
There are some topics in this Q&A related to this question, but none of them is about Idle users - Concurrent or Named.
If timeout minutes are specified in Optional Features, then all idle users are...
I would like to know what BackgroundHALShouldPause does, and how to use it. While it's listed in the HAL Primitives report, it is not used in source code and it doesn't appear in the LMS HAL...