Second Workshop - Forms creation - Step 11 - Edit columns Product request

Hey Guys,

i have some big Problems with the second Workshop. In step 3 "Forms creation", Nr. 11, there is the following Task:

"We will now include the products Information. Drag and drop the Product request collection to the Product Information Group. This will Display a Table Control. Click it to enable the Edit columns button."

I dont get this button an no Table Control?! ...i´m not able to get a table for this attributes!?

Now i´ve noticed that my Icon beside "Product Request" in the Data-Tree Looks different then the Icon on the Data-Tree an your Workshop-Documentation!? --- Is this the reason for my Problems?