Navigate to the Settings tab from the Nav bar on the bottom left corner.

Click on Logo under Account heading on the top

Ensure that the logo pre-requisites are as mentioned in the description - .png format, minimum 300px wide & 300 px tall, with an aspect ratio of 1:1.

Preview the uploaded logo in the screens below to understand how your clients will view your brand identity on the Login screen, Home screen and Menu bar.

You can upload as many logos as you please.

Alter the theme between Light or Dark, however you wish for your clients to view it.