Hi Adrian,
Usually the login area is visible at the top of the forum site, i.e. you can see immediately whether you are logged in or not. (See also the first attached picture.)
If you do not see this area under Windows, click on the downward pointing arrow symbol in the top right corner. This allows you to show or hide the login area. (See the second attached picture).
In order to be able to see certain forum areas, such as the Charter/Supporting Members area, you have to be logged in (with your username and password), as Roger mentioned earlier.
Best regards,
Chris
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