You can edit alert prediction policies from the the Alert Prediction Policies page.
- Go to Setup > Alerts > Alert Prediction to display the list of defined alert prediction policies. - You can select the number of alert prediction policies to display per page. 
- Select the client for the alert prediction policies you want to edit. 
- Click the Policy Name of the policy you want to edit to display policy details. 
- Click Edit to make changes to the policy. 
- Follow the same steps you used to create the alert prediction policy, editing the fields you want to change. 
- Click Save to save the changes.