The SCLogin module doesn't limit how many are on a line. The limit is set by the width of the container that the SCLogin module is in and the width of the buttons themselves. I'd suggest any of the following:
* Placing the SCLogin module into a wider module position. If you're using the popup / modal option, you may need to use some CSS to make the popup wider (we can help if you need)
* Use smaller buttons. In the SCLogin module, there are settings for which buttons to use. Choose smaller buttons for one, or all, of the social networks.
* Create your own buttons. You can add your own social login buttons to the /media/sourcecoast/images/provider directory so that they can be selected in the SCLogin module as well.
I hope that gives you some ideas, but if you need anything else, please let me know.
Thanks,
Alex