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You might be excluding vias in the plot of the board.
Via is something the PCB maker adds to the board to connect the layers. It is an extra step. The PCB maker will add copper inside the holes.
If you hand make this board, you will not have vias so you need to put a very short piece of wire in these holes and solder top and bottom side. Also, you will need to solder the top and bottom side on many of the IC pins.
If I did this board I would make the power and ground traces much widder. Add capacitors at all ICs and the transmiter power.
How will you make the PCB?
If a factory makes the board then all the via problems is no problem.
If you make the board by hand then you will need to solder every top side sonnection and every bottom side connection. If there is no trace going to a pad then it could be left unsoldered. You will need to put a wire in each via hole and solder top and bottom side.
Do you mean i have to connect all the pads including the ICs, switches, etc??