I wanted to create an event type of program. But I did not get any program type called "Event". Please note mine is rather a fresh marketo account.
I used to see "Event" program type while I worked for my previous employer using a different marketo account.
See the screenshot.
As fas as I know, this is not included with all Marketo licenses and in some case, can be an option. Discuss it with you Marketo sales rep or CSM first and if they tell you it's part of your license, contact support>.