Worksheet "Orders" (19,000 rows, give or take)
In column A: Customers (of which there are 41 unique entries)
In column B: Locations (from 1 to 8 per customer)
Other columns have additional data from each order.

On worksheet "Query", I'd like to create a function which, for a particular
Customer, returns all possible Locations associated with that customer.

So, for instance, the result might look like this:

     A                  B
1 Customer    Alamo
2 Loc1           Ogden
3 Loc2           SLC
4 Loc3           Alb
...

and so on.

What formulae do I need in B2-B4?

Thanks