Resolutions are the committee's actions or recommendations, and are what delegates are producing and debating upon during the conference.
Here can be found a more in depth explanation, as well as writing tips and sample resolutions.
IT will be used in CIMUN for displaying resolutions, among other functions. The uses of IT during CIMUN can be found here, including when/what uses are acceptable during the conference.
Position papers are a brief summary of the delegates country's stance on the issues to be debated during the conference. These should be prepared previous to the conference and emailed to you chairs. Further information can be found here.