General/Trunk mode is the setting you want to use for multiple VLANs. The CLI is limited, and the intention is for these switches to be managed via the GUI. There is a port profile feature that allows you to apply the port profile to multiple interfaces at once. Page 165 of the user guide goes into details about this feature and how to use it. [URL]  
I am trying to see if there is a way to configure multiple ports at one time either through the CLI or through the GUI. In the CLI I am unable to find the right syntax to get this done and I keep getting an invalid parameter x1052P(config)#interface GigabitEthernet ?? In the GUI it seems like I can only do one port at a time and I have 50 ports to do so it's a bit time consuming.  
X1052 - configuring multiple ports at once to general mode