How to raise the image size limit within Confluence to allow larger images in Word imports

[Nagarjun]

How to raise the image size limit within Confluence to allow larger images in Word imports?

As article says 

https://confluence.atlassian.com/confkb/how-to-raise-the-image-size-limit-within-confluence-to-allow-larger-images-in-word-imports-424314122.html

Check in admin Confluence Admin>Office Connector but I don't have option in my admin account. Can someone help how to increase this limit.