PCB slots, what they are called, and how to make them

How can I make a slot in the PCB? - Layout pcb slot Name: blind slot printed circuit board Part No E0214040002A Layer count: 10 Material: FR4 ,TG180, , 1 OZ for all layer Minimum tack: 5mil pcb slot to lock the slots series 2, 2 and 2 When using a slot lock, the maximum adjustable PCB width is reduced by 3 mm PU: 20 piece

reel gem slot Printed Circuit Board manufacturing and assembly capabilities, PCB technologies or design rules for guide of PCB design and production