I have a button, when it is pressed it should bring up another VI, where user would initialize things.

[Noman]

How to make such pop up subvi. Thanks

[Dennis_Knutson]

You've got a couple of shipping examples that you can look at. From the help menu, select Find Examples. The examples you want to look at are under Building User Interfaces>Designing Dialog Boxes.

[ian_fung]

this is a simple example on calling sub-vi and positions it within the main vi.

best regards
ian