Multiple remotes in rclone configuration file(s)

Question

After reading rclone's documentation I can see you add a remote like this

#normal space
[my-first-space]
type = s3
env_auth = false
access_key_id = XXXXXXXX
secret_access_key = XXXXXXXX
endpoint = fr1.digitaloceanspaces.com
acl = public-read

I want to move files between remotes, for that I need another conf block:

I create a rclone.conf file inside my user's home

1. Can I just add the other one below the first one?

2. How can I indicate rclone which config file to use