Get started from My Pages
To create a button for your page, first, locate the specific page under 'View all Pages' and select the pencil icon to enter into the page builder
Select 'Button Generator' from the Promote menu
Here you can customize your button to fit your liking.
After you have your button customized you can copy the code in the box to the right and paste it onto your website.
Adding the Custom Button to Other Pages Across Products (RegFox, TicketSpice, GivingFuel, RedPodium)
Add a Raw HTML field to your page by selecting the plus icon in your page builder
Then select Raw HTML
Paste your code and select, Done!
If you want more customization controls, you can find any button generator online like this one to be able to customize it more to your styles.