Not sure if I am understanding you properly - if not sorry.

Go to the Forum home page.

You then click on any of the forums that you want to start a new thread. Note that the County Forums all expand. For example, clicking on England-Counties will then show a a forum for each county.

Click on for example, Bedfordshire County Wide Forum. Click on New Thread, Type in a title for your thread, type your query in the large white box further down then click on Submit new thread or Preview Post then Submit new thread.