How to make heli refuel start after regular heli leaves?

Just wondering is there a way to make the heli refuel start after the regular heli leaves so I dont have 2 helis on the server at once?

FYI Thank You Kill for all that you do..

I recommend that you disable timed events in HeliRefuel.

"HeliRefuel Plugin Event Weight (0 = Disable)": 20.0, // Then increase the weight of HeliRefuel in AutomatedEvents​
"Maximum Number On Server": 1, //With this set to 1, your server will not have two helicopters at once

Yes timed events in heli refuel is already disabled..

"HeliRefuel Plugin Event Weight (0 = Disable)": 20.0, // Then increase the weight of HeliRefuel in AutomatedEvents​
"Maximum Number On Server": 1, //With this set to 1, your server will not have two helicopters at once​
is already set exactly like this.. but main heli and refuel still come out randomly most of the time on top of each other

The function of this plugin is to randomly run events.