How to protect the form using a username and password?

I want to limit the people who can submit the form by providing a username and a password.? How can i do it?

Hello @sanath_ahamed,

Welcome to Plumsail Community!

You can restrict access to the form by enabling Allow only authenticated users. Authenticate users with Microsoft Account or Azure AD B2C.

Please find more information in Manage users in public web forms article.