You can manually add timing information to jobs if required.
To add timing information follow these steps:
1. Open the job in question then select the Tools Tab  then Job Summary 
2. You can then select the Variation (bom) 
3. Click the [+] (2) which will create a new timing record. You can then click the [>] (3) to open the timing record for editing.
4. You can then select the Employee , Process  and Start  and End  times.
5. Click the close button of the dialog  to close.
You can then repeat the process for each Variation on the job.