Shift diagonally

I’ve thought through a few different ways of handling this. The most straightforward may be:
1. Rotate the entire design such that 1 and 2 are now horizontally (or vertically) aligned.
2. Select 2
3. In numeric edits X-position do current position - 5 mm.
4. Rotate design back

There are several strategies to rotate the design. Here’s a fairly easy one:
1. Select entire design
2. Switch to Edit Nodes tool
3. Hover mouse over bottom or top edge of 1 or 2
4. Push A on keyboard