Hi and Welcome.
First off is Zorin the only system in use?
Second did you choose automatic install?
Personally I always use the something else method.
First create a 512 Mb FAT32 partition for EFI (secure boot if your BIOS supports it).
Second create a Primary Partition of 80 Gb and format to Ext4 FS and mark it as '/'.
Third create an Extended partition and at the END of the partition create a swap area that is equal to double your physical RAM. Then all of the space before the swap area formatted to Ext4 and mark as '/home'.
I never use LVM as have read others having issues regarding it. There is a name for it but can't remember the name.