Where can I find...?

Priya Praveen got it.

campaign management service in your member area / sidebar.

Click on the Start your own campaign now., then click on use credits which is right side, then click on manage campaigns .....

click on the create campaign, then click on use credits, then click on manage campaigns

is your campaign called mega pack plr?

Very good question because I have same problem. But, probably, we’ll find someone to tell us where it is the campaign.