Basket Analysis - One slicer on one table

Hello All, 

I am a long time reader - First time poster. 

I have been working on a report where I am using a basket analysis. I have been using this link on  "Basket Analysis" and it has been very helpful in generating the initial data that I am using. I have been requested to be able to further breakdown the data. 

Currently, the report has a slicer with all of the products and a table with all of the products and the number of customers with that product. If an item is chosen in the slicer it shows all of the products and number of customers with that product. I.E. If I chose product A it says 10 people have A and 8 people have A & B, etc. 

I am being asked is to be able to select, multiple products on the one slicer that will update the table. At present, if multiple products are being select it only shows the product with the most customers and does not update the list. As more prducts are selected, in therory, the number of customers who have the product should go down. 

In other words,  if Item A is selected in the slicer and it shows 76 people have A, 73 with B, 42 with C, and 10 with D - If products A & B are chosen in the slicer, would show 73 customers with A, 73 customers with B, x customers with C, x customers with D

I have three tables. 

Table 1: Lists customers and products

Customer:                        Product:

1                                       a

2                                       b

3                                       a

3                                       c

Etc. 

Table 2: Lists a product list

Table 3: is the same as Table 2 but is being used as a filter. 

Thanks in advance for the help.