After selecting a timeseries and drawing a box around a movement of interest, you can select both change and level as a way to analyze the selection box. In this case, Brazilian 10Y Rates dropping while also being between 6.4% and 7%.
The system will take what you've selected and find other periods when the timeseries was within the upper and lower levels of your bounding box and the move was at least as extreme as what you've outlined. Provided similar periods are found, the system will show you the typical forward path projection after the timeseries exits the box.