Hi,

Is there a way to have weekly and monthly charts for different data on the same chart??

An example would be to plott the ROC of monthly CPI and the ROC of weekly bond prices on one chart. 

 

You can use the Insert-->Security command to add a secondary security into a chart.  I recommend using Window-->New Inner Window, then left clicking on this empty inner window before using this command.  Be aware that the data points still must line up with the X-Axis, so you will see gaps between the price points.