How do I separate the window panes from the main window?

In the top right corner of the Portfolio window, click on the "Filter" icon and uncheck the box that says "Show zero position rows". Close the window and your closed orders will disappear.

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If you cannot adjust the width of the columns in your Account Window, it is because they are currently configured to fit to the window. To change this configuration, click the small wrench icon in the top right corner of the section of the Account Window you are looking at. Choose "Configure Columns" from the drop down menu. At the bottom of the window, uncheck the box that says "Fit columns to window". Click Apply to save your changes and OK to close the window. You can now adjust the width of the columns in that section. Repeat for any other sections you wish to adjust. …

To change the colors of a watchlist in the Mosaic layout of TWS:

1. Left-click on the Configure (wheel) icon on the top-right corner of a watchlist
2. Select Settings…

In order to only see your open orders in Mosaic, look for the drop down menu in the top right corner of the Activity window that should currently be set to ALL. Click on this and change it to LIVE ORDERS. This will remove any filled or canceled orders and only show your open orders…