Define multiple variables in one panel?

Hi,

 

Is it possible to create one panel for the user to define variables or sets?

 

Alternatively, instead of a panel - is it possible to create a pop-up window with a table that requires input for each variable before you can continue?

 

At the moment I am using this kind of code for the user to input values:

 

set value 1 [hm_getint 'value 1' 'value 1']
set value 2 [hm_getint 'value 2' 'value 2']

 

However this gets very tedious after having to go through 5+ panels clicking proceed each time

 

Thanks