The HubSpot App allows you to embed forms into any element on your page, including divs, containers, and slots. For collection items, here’s how to add forms to individual customer story pages:
Navigate to the specific customer story page in the Designer
Select the container where you want the form to appear
Open the HubSpot App from the Apps panel
Choose your desired form from your HubSpot account
Select either the Styleable version (which allows you to match your site’s design) or the iframe embed option
Remember that you’ll need to repeat this process for each individual customer story page where you want the form to appear.
Hopefully this helps! If you still need assistance, please reply here so somebody from the community can help.
I think, avoid using the HubSpot App here, you’d want to build your integration custom so that you can differentiate the form with CMS-stored data only.
If you can generate the form embed HTML in HubSpot, you can copy-paste that into the CMS item, by creating a richtext field and then when editing it, create an embed in the richtext content and paste your HubSpot HTML there.
In your Collection Page, add a rich text element where you want the form to appear, and bind it to that field.