Without using PowerApps, is there any way to achieve the following in Sharepoint Online?
IN A NUTSHELL: A first-time user visits the Sharepoint site homepage, clicks "register now", a list is updated automatically with the "Person" data and the user is redirected to another page.
Longer explanation.
I have a list (Registrations) that needs to be populated with some values when a user registers.
The only values required are the "Person" as in the ADAzure Person that is registering and the UserId (numeric value of the registered user)
I want to make it so that the user only needs to click a button to register as all other details are prepopulated, so no need to fill in any forms.
I want to ensure that if a user is already registered, they can't reregister.
I want to ensure that once a user registers, they are redirected to another page,
I'm using Modern Pages, I want to avoid PowerApps and MSFlow.
