In the help, you can find
Sample XML for bulk import of Conferencing Profile
<?xml version="1.0" encoding="UTF-8"?>
<tns:users xmlns:tns="http://xml.avaya.com/schema/import"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xml.avaya.com/schema/import userimport.xsd ">
<!-- User Record for:
5555555@domain.com -->
<tns:user>
(Other user elements are required here - consult the main user record XML schema reference)
<!-- Here, a Communication Profile is defined for the user -->
<commProfileSet>
<commProfileSetName>Primary</commProfileSetName>
<isPrimary>true</isPrimary>
<!-- The user must be given one or more handles (of type “SIP” or E.164) -->
<handleList>
<handle>
<handleName>5555555</handleName>
<handleType>sip</handleType>
<handleSubType>username</handleSubType>
<domainName>domain.com</domainName>
</handle>
</handleList>
<!-- Here, one or more product-specific profiles may be Defined -->
<commProfileList>
<commProfile xsi:type="ns2:MmcsCommProfileType" xmlns:ns2="http://xml.avaya.com/schema/import_mmcs">
<commProfileType>mmcsCommProfile</commProfileType>
<ns2:template>event_1000</ns2:template>
<ns2:securityCode></ns2:securityCode>
<ns2:moderatorPin></ns2:moderatorPin>
<ns2:eventConfCode>777</ns2:eventConfCode>
<ns2:location>Location1</ns2:location>
<ns2:autoGeneratedCodeLength>6</ns2:autoGeneratedCodeLength>
</commProfile>
</commProfileList>
</commProfileSet>
</tns:user>
</tns:users>
Hope this help.