Do you have a shoppinglist for the parts needed to use on the plumbing of a double kitchen sink with disposal and dishwasher please?
I like the set p that both meet in a wye where the pipe goes into the wall - not the T pipe set up.

Do you plan on using one trap or two? Do you plan on using PVC or metal? Short of being there to look the job over I can give you a general material list if you tell me what you already have on hand. Back to you. Tom

There are several ways to plumb it. We use single trap installation. See the enclosed drawing.

Material list would be as follows:

1x Double Bowl kitchen sink drain assembly ( Includes Trap / will include long drain 90 piece - you will toss it as this is used when you don't use garbage disposer )
1x 6" extention ( just in case )
1x Branch "T" ( you can use it with or without Air Gap option )
1x Drain Adapter ( to connect to existing drain / select adapter that fits the type of your pipe )
1x Tail Piece 12" long ( to connect Garbage Disposer drain horizontally )

It should be either PVC ( white pipe ) or tubular ABS ( black pipe ). Keep it consistent. Don't mix and match. All washers and nuts should be included with each section of pipe.

All can be purchased in Home Depot or Lowe's for under $25.00.

Hope that helps. Back to you. Milo