calendly-popup
Add Calendly to Webflow website as a Popup.
What you need to do:
1) Give unique ID to button, in my case calendlyBtn
2) Copy paste code from Home custom code to your project page before /body tag
3) Add Embed element to your page and copy paste code that's in my embed element, bud add your unique Calendly link
If you have Calendly button on multiple pages, make Embed element a symbol, so you don't have to edit it multiple times in the future.
If you have multiple buttons that trigger calendly on the same page, you will need to duplicate the script with unique IDs in scripts and buttons.