Dear Sir

 I have a scheduled Import group of html files from google drive. the scheduled interval time is 1 hour.

but the scheduled not start every one hour. One import was finished then the finished time pluse 1 hour is next import time. ie  the first import start at 8.00pm and finish on 8.10pm then next sync time is 9.10pm. 

how can i fix it every one hour that is 8.00pm, 9.00pm ,,,,.