Hi kresa33333,

Question 1

Please set property ResizeMode="AutoAdjustHeight", then the editor will auto adjusting the height

 <RTE:Editorrunat="server"ID="Editor1"Height="260px" ResizeMode="AutoAdjustHeight"/>

Question 2

The examples below should match your requirement

http://richtexteditor.com/demo/switch_editor.aspx

http://richtexteditor.com/demo/multi_editor.aspx

Regards,

ken