Writing technical documents with gender neutral language

1)
The form no one enjoys reading:
The project manager approved the estimates and added it to her or his project plan.

The more appropriate form:
The project manager approved the estimates and added it to the project plan.


2)
The form no one enjoys reading:
The professional project manager considers all the risks. S\he also categorizes them.

The more appropriate form:
The professional project managers consider all the risks. They also categorize them.


3)
On the level of words comes some examples:

Chairman --> Chair
Policeman --> Police officer


4)
For titles, unless you are sure about the specific person's preference; 

Miss --> Ms
Mrs  --> Ms