Business specific Collections query

 Hi Folks,

We have 3 different Industries ex:- Banking, Manufacturing, Whole sale

We have defined each industry as one "OU" completed GL,AP, AR and Ce setup steps.

now we need to start Oracle loans and Advanced collections.

I have completed  1 to 10 as per setup check list.

Could some one guide me how to complete following pending setup steps.

1. UOM for Advanced collections (Please explain how we will use this UOM in advanced collections after definition)

Another question is there is no clear description to setup advanced collection module setup steps. i.e navigate to Collection administrator, setup check list page, here i found many setup steps, where as implementation guide is not explaining how to define these .