How to more space to a folder

Currently under /dev/mapper/rhel-home i have 92 Gigs free space. Please see the below output.

[admin@localhost ~]$ df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/rhel-root 50G 3.8G 47G 8% /
devtmpfs 3.9G 0 3.9G 0% /dev
tmpfs 3.9G 444K 3.9G 1% /dev/shm
tmpfs 3.9G 9.0M 3.9G 1% /run
tmpfs 3.9G 0 3.9G 0% /sys/fs/cgroup
/dev/mapper/rhel-home 92G 78M 92G 1% /home
/dev/sda1 497M 124M 373M 25% /boot
[admin@localhost ~]$

As a part of a software installation one of application will ask for around 60 gigs of free space under the folder "/etc/arcsight". The Folder "arcsight" under /etc will e created while we installing the application.

Now, i want to assign 60 GB space from /dev/mapper/rhel-home to /etc/arcsight. Can some one tell me how to do it.

Please let me know the commands also. Since, i don't linux OS those commands will be helpfull for me.

Thanks,
Vishnu.