There are two ways to view you campaigns.
1st is through the campaign list table and 2nd is through the campaign drop down menu on your leads screen. (Take note that you must have created a campaign or have campaign permission to be able to view this. )
This article will show you the 2ns option. - How to navigate through your campaigns in the campaign drop down list
Simply click on the campaign drop down list to expand the selections
1. Select among the list:
You can select the campaign directly
2. You can search a campaign
You can type in or paste a keyword to pull out the campaign
3. To load all campaign again, simply click on "All Campaigns"
You can go back and select ALL campaigns again