Hi, we are missing the Web widget classic on the Zendesk Admin. Does somebody know how we can activate it and what implication does it have?
Do be more precise if I go to Channels → Classic → there should be the classic web widget in which you can utilise the custom forms but on our side is missing.




Yes, you're correct, the setting to add a custom form in the web widget (classic) can be found in the basics tab as shown in the steps below:
To enable ticket forms in your Web Widget (Classic)
This may not show if the contact form is unchecked as shown below:
You can check this article for your reference:
Enabling multiple ticket forms in the Web Widget (Classic)
I hope this helps. Please let us know if you have further questions. Thanks!