This feature is best explained by using an example.
...
...
Say you are going to work in a certain area for the day. You might begin your Your approach in TreeKeeper by searching for may begin with running a search for all sites in that area using the Search Tool. In
For example, in the screenshot on the right, I have searched below, you will see a search for all Sites in Area 3sites in the Northeast Quadrant.
...
Once the search has been run, you can open the Data Grid using the up-arrow 
button on in the bottom-right corner of the screen. You can then use the Queue by Polygon to Queue specific Sites in one section of the map in your area tool to draw a polygon on the map for sites near your exact location. This will add any site in your selected set within that drawn polygon to the Grid Queue. The Un-Queue By Polygon can tool is be used respectively to in the same way, but it will remove sites within the drawn polygon from the Grid Queue.
...
After you have selected Queued the desired sites you want to Queue, you can press click Sort by Queued Data to sort those the queued sites to the top of the grid. (Remember, you can hop back into the Report Builder to view those Selected Sites or Queued Sites within any Report as long as the Report Criteria includes those sites!)
...
data grid.
...