The General tab of a Client record shows the client's Primary address. However, you are able to capture multiple Client Site Addresses as some client's have more than one or different billing addresses. 

Click the More Addresses tab:

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Click on + New Address

Add the address and main contact phone number:
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In the Address Name field, add the name of the site location.

In the Address Type, select from the below options:
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Save and Close the record.

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Any Addresses chosen from linked records, such as the Contact work address, the Vacancy Address, the Client site and Client invoice Addresses on the placement, must all be selected from a Look Up field which links to the addresses stored on the Client record.

NOTE: If there are any fields missing from an address, they must be updated correctly on the Client record.