I have a Sharepoint Calendar List that has multiple content types. When I click the "Add Item" link on the calendar, I am prompted to add information for the default content type. However, I want to be able to prompt the user as to which content type to fill out, without making them go to the New Item item in the ribbon. Is this possible in the 2010 Designer or the website?
You can figure out what the content type ids are by clicking on the "Add new item" in the ribbon and looking in the address bar. In order to see the actual URL in the address bar of your browser, you will need to temporarily specify to not display forms in a dialog under List Settings > Advanced settings
In List Settings, click Advanced Settings. Allow management of content types.
Then, the New button becomes a drop down, with an entry for each content type.