I am looking for a way to make a chart pop-up in a worksheet no matter the
location I am working in the sheet at that moment. And to make it disappear
again.

If this is not possible, then I would be very happy to be able to return to
the place where I left my worksheet by command button. E.g. my cursor is at
cell SY2377 in worksheet A and I use a command button to jump to sheet B. How
then do I return to SY2377 in sheet A?

Reason : It's a very large workseet in which I am changing data at several
places. It is not possible to have data and chart at the same screen (too
big).