You can't really use central licenses with Maestro or ElasticXL, since the management server sees the whole collection of members as a single object. It can't see them separately, so it can't license them separately.
You can always get the license from a box using cplic print -x, like so:
[Expert@DallasticXL-s01-01:0]# g_all "cplic print -x | egrep '^([0-9\.]{3}|Host)'"
1_01:
Host Expiration Signature Features
192.0.2.1 never s9fOdEmd0P70idPRmk0P1outtdw036hocgvg CPAP-SG360X CPSB-FW CPSM-C-2 CPSG-C-4-U CPSB-VPN CPSB-NPM CPSB-LOGS CPSB-IA CPSB-SSLVPN-5 CPSB-ADNC CPSB-IPS CPSB-URLF CPSB-APCL CPSB-AV CPSB-ABOT-L CPSB-ASPM CPSB-CTNT CK-00-1C-7F-AB-CD-EF
1_02:
Host Expiration Signature Features
192.0.2.2 never AcAKEmP7O57PdgGYo4zVdYtOdI94S0DjkJA3 CPAP-SG360X CPSB-FW CPSM-C-2 CPSG-C-4-U CPSB-VPN CPSB-NPM CPSB-LOGS CPSB-IA CPSB-SSLVPN-5 CPSB-ADNC CPSB-IPS CPSB-URLF CPSB-APCL CPSB-AV CPSB-ABOT-L CPSB-ASPM CPSB-CTNT CK-00-1C-7F-AB-CD-F0
I've faked the signature and redacted the MAC, but that shows the general form. You can then convert the license to a cplic put command like so:
cplic put <Host> <Expiration> <Signature> <Features>
To give a specific example using the first fake license from above:
cplic put 192.0.2.1 never s9fOdEmd0P70idPRmk0P1outtdw036hocgvg CPAP-SG360X CPSB-FW CPSM-C-2 CPSG-C-4-U CPSB-VPN CPSB-NPM CPSB-LOGS CPSB-IA CPSB-SSLVPN-5 CPSB-ADNC CPSB-IPS CPSB-URLF CPSB-APCL CPSB-AV CPSB-ABOT-L CPSB-ASPM CPSB-CTNT CK-00-1C-7F-AB-CD-EF
Edit: I forgot to mention that this is only useful for restoring the license to exactly the same box (e.g, after wiping with ISOmorphic). This will not work for replacing a failed system. A replacement system will have its own license which you will need to use for it.