Stuck in LVM while installing Debian for Proxmox. Can you help me?

If you never have done a Debian setup with manual disk partitioning I recommend to use the Proxmox installer ISO.

Press enter on the first tree lines stating with #1 (data, root, swap), choose file system, mount point for the first two and sap for the last. Default mount point for "data" is /var/lib/vz.

HTH
 
Thanks for your patience on giving the indications for making LVM configuration.
I finally got that part working as you can see in this picture
https://www.dropbox.com/s/c4ix6zxwizjf2q5/Screenshot from 2017-01-03 15:42:05.png?dl=0

However I still can't install Proxmox as you can see in the following pictures
https://www.dropbox.com/s/sufjwnb3354ty2s/Screenshot from 2017-01-03 15:42:21.png?dl=0
https://www.dropbox.com/s/rkitw5kn6gl3qgl/Screenshot from 2017-01-03 15:45:34.png?dl=0

I am still following this manual but it didn´t work.