User blog comment:MappingAustralia/Wordmark/@comment-35130978-20171011100202

Click a tiny double arrow button on your browser page

It should pops out a taskbar, which is useful for admins.

Once it pops out a taskbar, mouseover "My Tools" and click "Theme designer".

The page will change, you should see a big white and blue thingy on the top of your browserpage.

It should shows "Theme", "Customize" and "Wordmark" button on the top-left.

To change wordmark, obviously click "Wordmark"

There are 3 sections, which is "Community name", "Wordmark", and "Favicon"

Look at the top-middle of your browserpage, you will see a big text written "Wordmark" and "upload a graphic".

Click browse to upload your own wordmark, click ok.

and click "upload" button.

After that, you must click "Save, I'm done" button under the "Favicon" section

Conrgats, you uploaded your wordmark