What would prevent a user from including fields when running a report?

How should a System Administrator prevent a user from logging in if they are a running user of a dashboard?

Is identity confirmation necessary if a user's IP address is known and browser cookie exists?

How many Editions are there in Salesforce.com

A marketing user needs to. create a new campaign, but the New Button is NOT visible from the campaign home page. The system administrator has verified that the user has the "Create" profile permission for the campaign object. How should the system administrator resolve the issue?