u should create parameter (user parameter) for example Rep_number (type - number) and include this parameter in Parameter Form.

in your queries Q1,2,3 u should white like this:

Q1 -> where ...... and Rep_number = 1
Q2 -> where ...... and Rep_number = 2
Q3 -> where ...... and Rep_number = 3

and more - u can't link your query - its shoul be independent and place pictures of queries on Data Model one under another.