I need to cut a 20 foot sheet on a 10 foot table. How? Indexing???

I have a plasma table with a cut length of 3m(10foot). I want to cut
aluminium to make some boats. The lengths of aluminium will be longer
than the table can cut. I know that sheetcam does not have indexing.
(Maybe this should be made into the program).

But what if I was to cut the first half of the sheet, then stop and
push the sheet up , re zero/home the cutting torch and, some how
restart the cut from where it ended.

Is this possible to do?

Peter
Australia