Configure the SNMP view
R1(config)# snmp-server view SNMP-RO iso included

Configure the SNMP group
R1(config)# snmp-server group SNMP-G1 v3 priv read SNMP-RO access PERMIT-SNMP

Configure the SNMP user
R1(config)# snmp-server user SNMP-Admin SNMP-G1 v3 auth sha Authpass priv aes 128 Encrypass

Verify 
R1# show snmp group 
R1# show snmp user