In the main menu, navigate to the Settings (Gear icon) and select Contract templates. Then, select your desired template.
To modify or add a contract group, click Add line and in the next screen, click Groups.
Here, you can add a new group or, use the drop-down arrow, to change the sequence number of the group. You can also change the description of the group as well as delete a group (but only if no contract lines are linked to the group.).
Note: The contract group name must not contain the apostrophe character (').
Once you are done, click Close to return to the Contract line template dialog box:
Click Cancel to see your saved modifications.