Often new documents opens up a new popup window where you then loose the back function of the browser

Chrome browser has a plugin to force popup from added sites to a tab instead

Here is a how to for this plugin setup:

1. Navigate to: https://chrome.google.com/webstore/category/extensions?hl=en-GB

2. Search for One Window

3. Add this plugin to Chrome

4. On top right corner of Chrome, find this plugin:

5. Right click on it and select Options

6. In the popup that now shows add https://abms.antenor.no# in the textbox and hit save, restart Chrome browser.