In the portal, by default not all fields are showing.
Your current column configuration is saved when you logout of the portal, so if you make changes, be sure you are logged out of all browsers except the current one. After adding or removing columns, logout to save the setting.
On the right side of every field header, if you hover your mouse, there is a down arrow you can click. This shows the menu option "Columns" and after clicking there, you can see the list to add or remove.
This can be done on the events columns - maybe you want to add Venue City to that view. Or on listings, maybe you want to add SH Expiration.
The below screen shot shows where to click:
