You can find new surveys to add to your projects by browsing the Explore Surveys page
Steps
Select Explore in the top menu
You arrive on the Explore Surveys page
Search for a survey by name by typing in the Surveys Search bar
Select a survey’s name (or click the Preview button)
You arrive on its Survey Template page
Click the Add To Projects button
A popup appears with a list of all the projects you have editorial control over
Tick the projects you want to add the survey to and then press Save
The popup closes
Each time a Survey Template is added to a project, it creates a Survey Campaign