You can use the Column Filter button on many pages to show or hide specific columns to simplify your view.
To Hide a Column
Uncheck the checkbox next to it - for example, unchecking the boxes next to Timezone, Transfer and Transfer (Alt) columns will result in them being hidden when you click Save.
To Show a Column
Simply check the box next to it.
To Undo All Changes (See Default)
Click the "REVERT BACK TO DEFAULT" button.
To Move Columns
Grab the "handle" to the left of the column and drag it up or down. Release the handle when you have the column where you'd like it.