automatic mister problems

[caroline?]

I feel kinda stupid for posting lol but i can't figure out how the timing on my mister works i usually just push the button to make it work
so I ordered it a while ago and i have tried so hard to get it to mist automatically
i tried to set it for misting but it went off and wouldn't stop ahhh

so this is the mister and if anyone knows how to set it up your advice would be greatly appreciated

 

[Beman]

I don't use this one but here are some videos from Youtube.

 

[caroline?]

thank you!