The field « opt-in » in the subscription form to the social network displays a check box, which (if it’s required), can be used to oblige a future subscriber to read and accept the General Conditions of Use, for example.
But you should give your potential subscribers access to the GCU.
There is a little trick to do this:
As you may have noticed, it’s possible to modify the title of the fields by clicking on it.
For example, if you click on “Opt-in”, you can modify the text. This is how you could make a link to GCU.
Draw up your GCU
However, first of all you should write a post with your GCU and make it invisible (publication status), unless you want to display CGU on your website of course.
Then, you’ll need to get a link to this post. To do it, click on Preview and copy the link displayed at the top of the page, like:
Finally you’ll get
Finally, make the opt-in field required in the subscription form to the social network (administration > profiling > settings), then click on the text and enter this code to create a link to your post.