xml projects groups users
<group name="Readers" description="A group for users who have read access across the project">
<permissions>
<permission name="GENERIC_READ" class="PROJECT" allow="true" />
<permission name="GENERIC_READ" class="CSS_NODE" allow="true" />
<permission name="WORK_ITEM_READ" class="CSS_NODE" allow="true" />
</permissions>
</group>