You may want to ask questions of users while they are registering..."how did you hear about our centre?" etc. These steps will help you step up your question/s.
1. Click on Registrations - Setup
2. Click on Questions tab...you can either set up your Terms or you can Add New to add a new question
3. You have options with your questions. Working form the top these are the fields and what they mean
* Question Type - Yes/No
* Terms - If you choose Yes it will use your "question" as a lead in to the Terms you created. If you set it to no, it will just be a normal question without that link to your terms
* Mandatory - this means the user must reply with a Yes option. It is the only option that is user is offered and must be selected or they wont be able to progress
* Required - If this is set to Yes, they will need to respond to you yes/no or text question
Then press Save when done.