You'd like to open another Vocabulary Set in Clicker Communicator for iPad.
To ensure you have the latest Clicker Communicator, please check for updates:
https://support.apple.com/HT202180
Vocabulary Sets are stored in a Communicator folder on your iPad. To open one:
The Vocabulary Set Safe contains three pre-made Core Sets. If you select one, a copy will be created in the Communicator folder and opened automatically, leaving the original untouched.
To open a Vocabulary Set from cloud storage: