If it&#x27;s crowdsourced, then in order to change the license you may have to go to every single contributor and ask for permission to change the license.<p>I don&#x27;t see a clear statement of license up at the top of your spreadsheet or your webpage. If you have a small number of contributors, and you have email addresses for all of them, you may be able to actually contact all of them in order to set a license.<p>You may want to read up on contributory licenses like the one Wikipedia uses:
<a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Wikipedia:Text_of_Creative_Commons_Attribution-ShareAlike_3.0_Unported_License" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Wikipedia:Text_of_Creative_Com...</a>