One way to deal with this issue is to create rules that will generate an exception when a stop (or a slowdown) occurs. This will allow you to see in what places on his route he stopped in as the point where the exceptions are generated will be marked with a red triangle and exclamation mark on the route.
If you are using zones for your route plans, you can also create a rule based on entering and/or stopping within the zones of your route.
One last option would be to use one of the IOX solutions that are compatible with our device such as the IOX-ALERT. This can allow you to create a button that, when physically pressed, can generate an exception at that point in time.
If these solutions are insufficient, please contact your reseller and they will be able to create a support ticket for further support.