K8098 Spectrum Analyzer Peak Hold Function?

Just purchased 2 K8098 Spectrum Analyzer Kits. Just finished constructing one. Everything works ok except there seems to be no true peak hold function. Peak hold suggests a memory until cleared to me but the I guess this doesn’t apply to this unit. Any thoughts on this?

If I remember right.
Peak hold just means the bars at the top will stay for just a little while.