Step 1: From the dashboard, click broadcasting, click growth tools, select Send Message Button.
Step 2: Select page, choose button style or enter a custom button URL and then copy the HTML code

Step 3: Login to your website and then insert the code on the header or the footer area of your website. If you are using a WordPress website, go to plugins, install header and footer script

Step 4: Go to settings, click on header and footer script, Paste the code you copied from SociCake inside the header or footer box and then click on save settings

Now refresh your website to see the button.