To filter the farm performance by period, you need to follow these steps: 

Farm > Analysis > Farm performance

After that, select an initial and final date that you want to have the results and click on "Group Results By". Choose a period of time, according to the image (week, month, quarter, semester or year) and click on filter.

After filtering, you will have a list of the selected group, like at the image (in this case, we select by week):