Add Connectors to KiCad PCB

An existing KiCad-based board is ready for its next revision. The design itself is stable; all I need now is to introduce 1–2 new connectors and make sure they are fully integrated into both the schematic and the PCB layout without disturbing the current footprint, board outline, or signal integrity... (Budget: $30 - $100 USD, Jobs: Analog Electronics, Circuit Design, Electrical Engineering, Electronics, PCB Layout)