Application Documentation (Help Topics)

I need detailed documentation for a Contact Manager that I have written. The documentation will be part of the website help files. You can see the existing Help Files at [login to view URL] If you look there, you will see some topics completed already. The contact manager is part of Office Extreme which has a number of different apps, including the Contact Manager. The documentation should look like the existing help files. The writing will be done directly on the website. All the author has to do is write click on the topic, select Edit, and then Edit the existing topic, then click the save button. So no other software is needed in order to do this. The finished product will have a Main Topic with Subtopics such as How To Create a New Contacts. The first step will be to create a list of Contact Manager topics (an outline) and then write the topics. It is expected to have about 15 topics each about 2 screens long. You will be furnished with a username/password to the online application. The Contact Manager is just one part of the application. In the future, the rest of the application will need to be documented as well, but I want to start out with one small project to see how this works out.