Performing risk assessment

Answer:

Included in the toolkit you bought you have access to a video tutorial that can help you fill in the risk assessment table, but broadly speaking you can use historical data from your company, or opinion of the personnel most involved with the assets you are assessing to valuate the consequence and likelihood of the risks.

These articles may provide you more information and examples about identification of probability of occurrence:
- How to assess consequences and likelihood in ISO 27001 risk analysis https://advisera.com/27001academy/iso-27001-risk-assessment-treatment-management/#assessment
- ISO 27001 risk assessment: How to match assets, threats and vulnerabilities https://advisera.com/27001academy/knowledgebase/iso-27001-risk-assessment-how-to-match-assets-threats-and-vulnerabilities/