Expand input panels by x mm more than their inputted value on the optimised panels

When I put the dimensions in for an input panel, I want a setting somewhere where so that the optimiser will expand the panel by x mm which gives me a margin for error or rough cut.

For example, say my input panel are:

• 720 x 560
• 400 x 560
• 400 x 50

I want a setting that I can set to 2mm that would expand all panels automatically by that value. Let's say I set my expansion to 2mm.

So my panels would end up being:

• 722 x 562
• 402 x 562
• 402 x 52

I want to be able to differentiate the expansion between the long side of the board and the short side. What I mean by this is I may want to specify an expansion 2mm on the short side and 4mm on the long side.