Obviously, this is not the easiest passage in the world to read. It can easily be revised to read at the 10 to 12 level by dividing it into shorter sentences. It is possible to creatively construct passages that are very difficult to read, yet have a low Fog Index. However, this usually takes more work than writing clear text. To make your sentences straight-forward, use active voice instead of passive voice.
Active voice is much easier to understand when reading instructional material.
The second sentence is shorter, easier to read, and tells the reader exactly what to do. Clear documentation must also provide a context for the readers in order to explain why they are reading the text. If not, your documentation is probably less effective than it should be. Writing clear documentation is not easy. You can't rely solely on the Fog Index to determine readability.