My first hint would be, install without LVM ^^
Or as some Admin here once said, LVM is a wonderfull solution to a problem that didnt exists.
If you KNOW (and are sure about) that you will only boot 1 OS, i'd make the /boot (NOT BIOS boot, that remains 1 mb) like 256 mb, i'd add for each distro/os the same value. (eg: 4 distro boot = 1gb /boot).
1 mb bios gpt
256 mb /boot
An important command for grub 2:
grub2-mkconfig -o /boot/grub2/grub.cfg
In case you've installed more than 1 distro.
OIther than that, i dont get what you mean by "what is the process".