To update the company logo, you can do the following steps:
At the top right of Access Practice Management, Click Setup (Cogwheel).
On the left-hand side, In the Quick Find box, search for My Domain and click on it once it appears in the search list.
Scroll down to Authentication Configuration and click Edit.
You can change the logo file to your own company logo or download the Access Logo.
You should now be able to change your logo.