lintu wrote: Can I display two groups in one page?
Limesurvey offers no page structure beside groups. So the short answer is: No.
You want to use the flexibility of the LS groups and then place these group on one page.
LS is missing the feature to have groups and pages at the same time.
There are survey tools which offer grouping features on question and even answerlevel. Which than can be displayed or hidden via scripting.
That is not the case with LimeSurvey.
As Joffm already pointed out you can apply conditions on every question to mimic groups of questions. But that makes the survey more complex. Not as elegant as having different groups on one page.