How to add mounting holes in Allegro (Note: Add holes in PCB drawings)

Recently, a small system module has been encapsulated for a foreign company. This module is empty in the middle, which is hard to solve, so far, I have not found how to add holes in a specific shape to the package (Instead, I can add some circular installation holes that come with the software) the final solution is to create a pad with a pass hole. The outer diameter of the pad is the same, but it seems that the pad (the empty pass hole) seems to have electrical properties (because the label must be added during placement, it indicates that there is an electrical attribute. If there is no label, it indicates there is no electrical attribute ).

When collecting information on the Internet to solve this problem, I learned how to add a self-drawn installation hole in any shape in the PCB diagram. The steps are as follows:

1. First, use pad designer to design a passing hole. The specific parameters are determined based on your needs. The specific parameters are as follows:

2. Then, use Allegro PCB editor to create a mechanical symbol file, use layout-> pins in the file, and add holes. Just like adding a pad, find and place the files and save them.

3. use Allegro PCB editor to open the PCB File, use the placement-> manual command, select mechanical symbol in options, and select the library in advanced settings, then you can use the self-created installation hole. Note: You must place your own installation holes in the set path file.