HM Revenue & Customs

How do I change the Trust Settings in the HM Revenue and Customs (HMRC) CT600 online filing software?

After downloading the HMRC software, you'll also need to change some computer settings in Adobe Reader. HMRC recommends you do this before you start to complete the PDF form.
You can find guidance about how to change the settings on the 'Changing settings in Adobe Reader and filing attachments page'.