Actually this is the current workflow to create an event:

• click on the current day
• click on the example event
• edit the example event with VisualEditor or from wikitext
• save

But we want to allow this workflow:

1. quick login with OAuth
2. fill a form
3. save

Proposed look

Here the homepage for new users:

Here the OAuth login in action:

Then here the form:

Pressing Save will create the daily page (e.g. [[Meta:Cronos/Events/2020-10-28]]) or just append a new event in there.