Hi larav471714,
When it comes to Web Analytics, you first define report suites in Adobe Analytics side and define eVars. For each eVar based on your report sutie you will decide what is their purpose
eVar1 can be tagged to Delivery Log ID
eVar2 for ID of the delivery
You can then change the order or define new variables to capture more information like Campaign ID or Send time.
Once this has been defined, you come to Campaign and write the tracking formula so that the corresponding values are passed from Campaign.
In simple words, you are the designer and the configuration has to be done as per your needs. There is no hard and fast rule coming from Campaign.
Regards,
Vipul