In the case of the second author, in most cases, the extra points of the first author are very important. For example, an article with only one author can be added with 5 points. If there are two authors, the first author will get 3 points and the second author will get 2 points.

In some units, whether there is a second author or not has no effect on the score of the first author. For example, only one author can add 5 points to an article. If there is a second author, the first author still adds 5 points, and the second author adds 3 points.

Therefore, these regulations are formulated by the unit itself. You can ask the personnel department for a document with instructions on it.

I hope it helps you.