Can someone please describe the purpose of the "Undefined field" that is available in the Report Preferences? I searched the help and the forum with no success.
This field has no special meaning, just an ability to insert a blank column in the report.
Secondly, I would like to be able to create additional fields such as "Include in Report?" It could be a text field. After creating it you would see it in the object inspector. I just want to use it in the report as a filter "Skip if empty" in order to create a template form to give to a colleague so that he can enter in the information I need to create the project.
This is not possible, but there may be workarounds. You can create a Place, a Work or Material resource, assign them to the required objects and, when displaying, filter either in the setting of the respective field (by presence), or when generating the report, there you can explicitly specify the required value for the filter. As an extreme option, you can specify keywords in the description of the object and filter them by the text filter when releasing the report.
In fact, the ability to set arbitrary attributes of an object is in my plans, but I have not thought through this aspect carefully enough to proceed with the development.