Close NBS Contract Administrator
Open Regedit (Registry Editor) and browse to the following location -
Computer\HKEY_CURRENT_USER\Software\BDS Ltd.\NBS Contract Administrator\Display\
Right click on "GuidanceWidth" and select "Modify"
Change "Base" to "decimal" and enter 600 in the "Value Data" box and click OK
Re-launch NBS Contract Administrator
If the Guidance is still covering the jobs repeat the above steps and reduce the Value Data in increments of 100