Hi
@mshafiee110
By default when you play around with the 'Grid' elements, the Rows and Columns are hidden until you turn the options on. If you check the other components, you will note that all is working. Click on the "Options" menu option in the toolbar and activate the two menu options
Ta!
NB: Please note that due to the "mac", you need to decrease browser to at least 80%-90% so that you have an option to work on the property bag