This is the default window for editing the values for a single behavior.
Edit values as you would in a spreadsheet program. You can copy and paste back and forth from Excel, and within the parameter window itself. You can use the menu commands on the parameter window "Edit->Copy" and "Edit->Paste", or the keyboard shortcuts Ctrl-C for copy and Ctrl-V for paste.
When you click "OK" in the parameter window, the data in the window is checked to make sure it is complete and valid. If there is a problem, you are given an error message and the opportunity to correct the problem. You are not allowed to save invalid data changes. For more on what an individual piece of data is and what limitations may be placed on it, consult the individual behavior documentation.