...
Install the Jira add-on
Install the Jira Cloud add-on Easy Export in your Jira Cloud instance
...
Install Office Word add-in
From Word install the add-in “Easy Export Jira Issues“ from “Insert->get add-ins->store“
...
Install the Jira add-on
Install the Jira Cloud add-on Easy Export in your Jira Cloud instance
...
Set Jira credentials in Word add-in
...