JEBAO movement pumps: configure Master Slave alternation

[kustode]

Hi everyone.
I have 2 Jebao MLW 20 pomps and I'm very happy with them.
I set up a program with the mobile app with different movements and a "Feed time" for when I feed the fish.
I therefore set one pump to Master and the other to Slave.
Everything works fine, but the problem is that the master stops after just 5 minutes and the slave starts. Then the slave turns off after 5 minutes and the master turns on again. All day in this way. So the flow changes continuously!
How do I can extend the time, for example 6 hours, so that the first pomp as Master will work for 6 hours, then the second pomp will start for 6 hours while the old master stops?
Thanks

 

[ShakeyGizzard]

I didn't know you could get a cycle period longer than 1 min. , At with least the Jaebao pumps I have used