Pgbackrest specifying the default DB necessary/correct way ?

List,

I have configured the pgbackrest on a live DB server and a Repo Server. (
EPAS 16, RHEL 9.4 and Pgbackrest 2.52.1 )

On DB Server I have
##############################
[root(at)db1 ~]# cd
[root(at)db1 ~]# cat /etc/pgbackrest/pgbackrest.conf
[Demo_Repo]
pg1-path=/data/edb/as16/data
pg1-port=5444
pg1-user=enterprisedb
pg-version-force=16
pg1-database=edb *## Query 1. *

[global]
repo1-host=10.255.0.40
repo1-host-user=postgres
archive-async=y
spool-path=/var/spool/pgbackrest
log-level-console=info
log-level-file=debug
delta=y

[global:archive-get]
process-max=2

[global:archive-push]
process-max=4
##############################################

*## Query 1: *

In this DB server I have other databases than the default "edb"
database. Specifying the above line as pg1-database=edb // I am
not sure this line is necessary or not ?

( I am just learning and exploring PgbackRest) found online some reference
configurations so using like this )

pg1-database=edb // specifying like this, will it block other databases
on this server to get backed up ? IF yes how can I overcome this ?

I want all databases on this server to be backed up to the remote
repository.

It is a production server and I can't perform a trial and error method here
to understand how it works.

Please shed some light on this .

Thanks ,
Krishane