Sorry, that probably doesn't make much sense. I hope this scenario does.
Click on Phishing, then the Campaigns tab and open a weekly or any non-one time campaign, to review it. Click on the Phishing Security Tests tab. Open one of the PSTs in that campaign. You can't get back to the PSTs in that campaign without going all the way back to the whole list of Campaigns.
Similarly, in both Phishing and Training, if you click on a Group; from the Group's detail page there is no link back to either Training or Phishing, only "Back to Groups." You have to use the browser's "Back" button which sometimes causes errors. Or, click on the Training or Phishing tabs and start over. There should be a Back button on the page that takes you back to where you were.