create multiple instances on a server 8.20 version

[Udara Ratnayake]

Hi My mysql version is 8.20 and need to configure multiple instances. Already running on instance now.

I referred following sites

https://dev.mysql.com/doc/refman/8.0/en/mysqld-multi.html
https://www.geekpills.com/database/mysql/mysqld_multi-how-to-run-multiple-instances-of-mysql

I wonder mysqld_multi is not available in my server. Do we have to download separately or how this available in the server, Does it not come with standerd binaries ?

[mysql@dcpri-webdbt01 ~]$ which mysqld_multi
/usr/bin/which: no mysqld_multi in (/home/mysql/.local/bin:/home/mysql/bin:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin)
[mysql@dcpri-webdbt01 ~]$

any one can give an idea?
many thanks