I asked about changing and adapting them and was told that this was not actually allowed and any changes have to be within the same contexts. I used the exampl of the one for the 60's and asked if different historical periods could be used and was told categorically 'No' because that is too much of a change. They also said any changes needed to be agreed by senior moderators and it was not possible to do that at the time I was asking. Sorry I am only telling you what I have been told. Maybe I was premature in asking for changes but I like to plan ahead. Next September would have been too late to find out that they would not accept the changes.