Hi guys , im working on the monitoring platform for an existing network with a lot of devices.
First goal I want to achieve is to create most complete device template possible, so here I come with some questions.

When creating a new device type , is it possible to specify default values for ?
Icon = ok.
Label = NOK (I need to do it after creating each device)
Label OID pooling time = NOK (I can not find how to do it)
SNMP profile = NOK (I need to do it after creating each device)
Services = NOK (I need to do it after creating each device)

Other:
Creating ping service is mandatory? dude consider device down if ping is not created?
When creating device;
What is the diference between requiered and allowed services?

Thanks for you help!!
Leandro.