Customizing Supplier Portal Registration through external Link

Summary:

Is it possible to customize Supplier Registration through Supplier portal link? For Example, if we need to attach some tooltip with attachment field while registering a supplier through external registration link.

Content (required):

Is it possible to customize Supplier Registration through Supplier portal link? For Example, if we need to attach some tooltip with attachment field while registering a supplier through external registration link.

Version (include the version you are using, if applicable):

22B

Code Snippet (add any code snippets that support your topic, if applicable):