Thank you Mayar,
I have stumbled across an issue with regards to this configuration though (although I know it is only a sample)....
The line near the end that says: "set aaa-access-profile TEST-ACCESS-PROFILE" ..... when trying to commit with this command I get the following error:
[edit services l2tp tunnel-group to-lac aaa-access-profile]
'aaa-access-profile TEST-ACCESS-PROFILE'
referenced access profile must be defined
error: configuration check-out failed: (statements constraint check failed)
Which when I look is right..... the TEST-ACCESS-PROFILE is not referenced anywhere so how is it going to work?
I may be asking something really silly here and many apologies if I am, but, where do I place my config to get the commit to pass please?