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.