Signals sort options

 
I am referring to the MQL5 website. They are showing thousands of signal providers. Therefore, it is very important to have different options to sort them on their website. What I am missing is a sort-option for monthly or weekly average performance or over another certain period of time, e.g. over the past three months, the entire time or any other well-defined time frame. I only have the option to tick “growth” which is only showing the entire growth over the entire time of the signal. When I move the cursor over the selected growth figure, I can see the monthly profit. However, I cannot sort the providers according to their monthly profit. Also, I do not know over which time frame the monthly profit (ROI) is calculated. So, what is needed is a tool in order to sort the signals according to their ROI over a certain time and by determining the time frame (currently, weekly, monthly, quarterly, semiannually, annually). I would very much appreciate, if there is such a tool provided.