To configure this module, you need to:

- Enter Odoo in debug mode.
- To add a specific context to a report, you should go to Settings -\>
  Reports -\> Reporting and look for the report you want to edit on the
  list. You will see that now they contain a new field called Context
  Value , where you will be able to add all the desired context
  parameters.
- Go to Settings -\> Parameters -\> System Parameters. On the system
  parameters list, look for report.default.context, which is a Python
  dictionary variable where you can add a context that will be common
  for all reports.

It can also be added on the developer side using:

    <record id="model_name.report_id" model="ir.actions.report">
        <field name="context">YOUR CONTEXT HERE</field>
    </record>