The easiest way to allow someone else to administer your Google Adwords campaigns is likely to add them as an Admin to your existing account. This allows you to own the campaigns and keep the records long after the user has ended their work on your project. It also leaves you still in charge of the budget and keeps you in an oversight role of your campaign.
Google has made it easy
to add an Admin to Adwords.
Step One. In Adwords click the wrench, labeled “TOOLS” you’ll be able to then select “Account Access”