AI Traffic problems

Hello,

I just created a line that connects the AI to Hahneberg Am Omnibushof (X49 on Modern Spandau). The problem is when the time for me to try I see the map at a time (7:03 am) at random. I see five buses on the X49. I want to clarify that the frequency of this line is: 7:00 am => 9:00 am: A bus every 10 minutes and 2:00 pm => 7:00 pm: A bus every 10 minutes.
How can I solve my problem ?

Thanks