Merging initial screen with subsequent VA41

Dear all SP experts!

I ave a question regarding: merging two screens of one transaction into one. I' ll try to explain with screenshots.

This is regarding transaction VA41:

1. So entering VA41 - it shows initial screen in which only two fields end user needs to fill (yellow) (red ones will be predefined).

2. So I would like to take those two fields to move to the next screen - where they would appear initially as two  fields which user needs to fill and then press Create/Enter button and then the next screen from VA41 shows below (table)

If the idea is clear I would like to know is it even possible? if not - maybe you guys have other bright ideas how end user could avoid the initial screen, where only 2 fields are relevant to fill...

Thanks!