I have Ubuntu 21.10 with VirtualBox 6.1.26.
I am trying to install Ubuntu 21.10 in a virtual machine.
When I choose English as installation language, the keyboard selection screen looks like this:

As you see the lower edge is cut off – but it is still possible to go on with this.
However when I choose Japanese as installation language, the keyboard selection screen looks like this:

The buttons quit, back, continue are not visible.
The right edge is cut off as well as the lower edge.
The same happens on the following screens. How can I get a larger screen during installation?
EDIT:
The following happened when I followed @pasman pasmański’s suggestion. The first few installation screens were ok but then suddenly the live system fell back to the low resolution:
But here the solution suggested in the second answer is working which helps to go through the remaining input screens.
EDIT2:
As @gronostaj suggested I tried to change the resolution once more, and then it goes on with this.
>Solution :
Virtualbox sets screen resolution 800×600 which is below minimal requirements for Ubuntu. In installer press Try Ubuntu button, go to Settings->Displays->Resolution and select 1600×900 or more. Then you may continue installation.
