Create LDIF for group

# vim sshaccess.ldif

dn: cn=sshaccess,ou=groups,dc=<domain>,dc=<tld>
objectClass: top
objectClass: posixGroup
gidNumber: 3000

Add LDIF to LDAP:

# ldapadd -H ldaps://<FQDN> -x -W -D "<Manager DN>" -f sshaccess.ldif

Add a user to the new group, create LDIF:

# vim addusertogroup.ldif

dn: cn=sshaccess,ou=groups,dc=<domain>,dc=<tld>
changetype: modify
add: memberuid
memberuid: newuser

Load LDIF in LDAP:

ldapadd -H ldaps://<FQDN> -x -W -D "<Manager DN>" -f addusertogroup.ldif 

Append to /etc/ssh/sshd_config:

# vim /etc/ssh/sshd_config

AllowGroups sshaccess

Restart sshd:

systemctl restart sshd

Append to /etc/security/access.conf

# vim /etc/security/access.conf

+ : dev : ALL
- : ALL : ALL