Apart from a variety of genders or policies to be more transparent to know each other, applying technology of collaboration tools like MS Teams or Cisco Webex so that people have a place to share or discuss anywhere help enhance collaboration more effective. More excercising in Workshop and brainstorm as well as open discussion with each other can also boost them more collaborative.
Other than online conference tools to work remotely with each other, when working at office, to encourage hot-desking (ref: www.roomminister.com) will aid employees to know and work among teams easier.
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