You can allow people to sign up to your Survey Portal and create their own project themselves.

Steps

Select My Apps in the top menu
Select Project Templates
You arrive on the Manage Project Templates page
In the Tools column: press the cog icon that appears next to the Project Template that you are using to manage your Survey Portal
A dropdown menu appears > Press the Edit button
You arrive on the Edit Project Template page
Scroll down to the Advanced section
A web address is displayed. This is the Sign Up link to your Survey Portal.
Select the web address text and press Copy (depending on your computer, you might need to right click the selected text in order to copy it).
Paste the copied web address into a document and then share it with people whom you want to invite to create a Survey Campaign using your Survey Portal.

Test and launch

Your Survey Portal is now setup.
To test it you must use a browser in which you are not already signed into Makerble
Use the Signup Link that you copied and it will guide you through the signup process. When you signup you will receive emails instructing you how to use the system.