Where most users run into trouble is that they feel, and I don’t disagree, that you should just be able to window select all the sketch entities and then just grab a point and drag the whole group. While this sounds logical, it has simply never been the case.
Then you could try the Move Entities command, but it doesn’t always snap to the final location as you might expect.
The following technique is completely effective and very easy to do, you just have to know the sequencing of the clicks.
First, Window select the sketch entities you wish to move.
Second, hold the CTRL key on your keyboard then Pick and Drag the selected entities from one of the points in the sketch.
CAREFUL NOW... The trick here is that a CTRL + Pick and Drag in Windows is a Copy... and that is ‘initially true’ here too. Note the Cursor with the little (+) next to it. If you let go of the Left Mouse Button FIRST, you will COPY the Sketch.  |  |
 | Instead, while in the middle of the ‘Copy Sketch’ operation, release the CTRL KEY while still holding your Cursor. The little (+) goes away and the entire operation turns into a MOVE command. Simply snap and release your cursor when your selected point is in the proper location, or snapped to the origin. |
In summary, of the thousands of functions in the millions of lines of SolidWorks code, these are some of the more useful yet somewhat hidden functions I use frequently. I hope that you found something you didn’t know about that helps you improve your quality of designs, but most importantly saves you time and effort during your creative process.