Template to apply for custom OID and graphs

Hi,
I am a total newbie so apologies… I did search the forums but could not find what i am looking for.

Basically most of my Wireless devices are discovered by SNMP and the graphs and stadard dataq is perfect so thanks to the dev teams.

I do have a Lithium battery system with SNMP.
They have Custom OID’s and I want to make a template I can apply to have them set up with the right OIDs and graphs without doing it manually for 2-300 batteries…

Obviously i am missing the first link on how/where to create a template for the OID’s to be applied and the graphs?

Please help…

Thanks.