When you setup a new (full) page external learning tool in your LMS you will see an page with a save (and optional upload) button.
At the right bottom you find page navigation.
With the search parameters you can narrow the results and how to save the results.
With the custom selection you make a static result from your query. This is useful if you want to show a limited amount of results instead of a growing series.
Use dynamic filter
The dynamic filter allows you to save the query instead of the results. This is very useful for growing series of lecture recordings.
Select all on this page / Deselect all
In addition with the option above you can easily select all items or only all items on this page.
Commit your selection with the Save button in the upper right corner.
NOTE: when one single item was selected you can select how the result will be displayed. See layout