ServiceNow group approval through workflow script

var approval_gr = new GlideRecord('sysapproval_group');

approval_gr.initialize();

approval_gr.approval = 'requested';

approval_gr.parent = current.sys_id;

approval_gr.assignment_group = current.assignment_group;

approval_gr.short_description = 'Change Management Approval';

approval_gr.wait_for = 'any';

approval_gr.insert();