client option to set the end time in the past and start a new task from previous end time

If I forget to stop and change task, I’d like an option in the client to set the end time in the past and start a new task from this time. Currently (unless there is a better way I don’t know about) I need to go to the my tracked time, add a new entry and edit the end time of the previous, add the start time of the latest to avoid gaps. There has to be a better way.