Grouping in AFCAD2

Hi All
I have adjusted Exeter airport adding some new taxiways etc. When i check for faults it tells me that the new taxiways etc are not joined or attatched. I have read the manual, but it doesn't tell you how to group everything so it becomes one. Any ideas???? Also, after doing this, will the AI aircraft use the new taxiways???
Many Thanks
Steve
I have adjusted Exeter airport adding some new taxiways etc. When i check for faults it tells me that the new taxiways etc are not joined or attatched. I have read the manual, but it doesn't tell you how to group everything so it becomes one. Any ideas???? Also, after doing this, will the AI aircraft use the new taxiways???
Many Thanks
Steve