For different reasons, you may have different setups of linguistic resources in place at the same time - maybe different departments have different brand concepts, or different users need different styles of communication to be ensured. Therefore, you may need to request a translation taking into consideration different glossaries, register settings, editor instructions, etc.
When requesting an On-demand translation, you'll need to select a Pipeline group. Clicking it will display a drop down list containing all of these groups associated with the On-demand subscription. Be sure to select the appropriate one so that all the linguistic resources are applied to your translation the way you intend them to be.
Pipeline groups are built and associated by the Unbabel teams. To know more, reach out to your Program Manager or CSM.