> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.oneupapp.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# When I add a "Call" CTA button, what phone number does it use?

When you add a Google My Business post with a "Call" CTA button, it will automatically take the primary phone number listed in your Google My Business account.