Work-search log: how detailed does it need to be? - what worked for you?

I am keeping a spreadsheet of applications, but I worry it is not what the agency expects. There are 15 people counting on me, so I am trying to be careful. My state says to keep records for a year. Has anyone been audited?

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.