How can I add welds to the inside corners of this sheet metal tray?

See attachment.  I cannot figure this out...  I can get welds added to fill the relief cut hole on the outsides of the corners, but thats it.  My boss wants the welds in the areas shown in my attachment and insists upon it.  I don't think it can be done in SW.  We want them there for FEA purposes.

Thanks for any input.

SolidworksSheet Metal