About buttons

Hi,
This can be done, you need 2 custom fields (you can add them using acf plugin), one should be text type and one url format, after that on the page or post (where the custom fields will be used) set the button element and add the name of custom fields in button text and url like this:
button text: {cf_btn-text}
button url: {cf_btn-url}
The name of custom file will be set inside the parameters {cf_cfName}, in my example the names are btn-text and btn-url.
I hope this will help you!