Right now I'm working on an interface for a web-based report application that manages logistic data of the companies registered by all the users of the website.
The functionality is basically the following:
You select which columns of data to display on your report. You select which filters you will apply for the report to be generated. You select in which format you want your report to be generated (be it Excel Document, PDF or plain HTML in the same page). You can either save the settings of your report and generate it or just generate it.
For the first two steps of the procedure you need to select through a series of linked dropdown menus and it is mandatory to select at least one column, but it is not mandatory to filter.
If you don't have to filter to generate the report, should you still give the user the 'Select all filters' option? Does it improve the understanding of the procedure or does it not contribute whatsoever, being perfectly clear that you should leave the second step blank?