- Why does only batch campaign can be scheduled ?
Only batch campaigns have the concept of an actual chronological schedule. Trigger campaigns run in response to (filtered) activities, which is not a schedule in the conventional sense. Trigger campaigns can be run via Request Campaign.
- How to check if batch campaigns are scheduled in the Marketo UI ?
How do you usually check campaign status in the Marketo UI?
- What is the use of scheduling a campaign when a trigger cannot be set in batch campaign?
I don't understand this question.
Here is a link to why people sometimes prefer to do a recurring batch campaign instead of a trigger campaign (if this is what you're asking in your last question): Before You Pull the Trigger on Triggers.