Required Single Invoice Account with Multiple Vendors

Dear Team,

I have a query . Please find below the situation and suggest me the way forward.

My clients have number of vendors who provide multiple category of products E.g. Vendor A supplies Boys Apparel, the same vendor also supply Girls Apparel. In this case client create 2 vendors (Vendor-A_Boys Apparel & Vendor-A_Girls Apparel).The requirement is as follows:

1- Client requires to view the individual balance of both vendor (Vendor-A_Boys Apparel, Vendor-A_Girls Apparel)

2- Another requirement is to view the total balance of Vendor-A

Please advice and thanks in advance.