How to restore settings in acp an enable new profil ?

[Ascor]

Hello,

I ask me if i am totaly blind ?
In acp there are two option near each settings..edit and erase..
When i erase one how can i do to restore it ?
And for the new profile i cant find how i can enable this..in user profile i see no option for this :/

[.Cameron]

And for the new profile i cant find how i can enable this..in user profile i see no option for this :/

The Profile Portal is enabled by default. If you want to revert to the classic, 2.1 profile-style, it's one of the last two options in the User Profiles setting group.

[Ascor]

Thank's for your help .Cameron, it's solved :)