To access your Brand Portal settings, select your Quick Links drop-down in the top right corner of any page on Yodify. Select the Brand you want to edit. Once in your chosen Brand Portal you can access your navigation for Settings then select Company Details.
From this page you can now edit your logo. Select the blue Browse button underneath your Current Logo, allowing you to search your device and upload a new logo. Select the blue Save button in the corner of this section to save your new logo.
For best practice in uploading a logo click Adding a Logo to Yodify.