To upload logo, you'll just need to follow the following steps:
Head over to Profiles App > Company Details
Click on "Edit" on the top right
"Choose File" to upload the logo that you would like, as shown in the screenshot below. Please ensure that the logo is in either JPEG or PNG.
Click on "Save" on the top right.
After updating the new company logo, you will need to re-process payroll.
Payslips will be auto-updated after that. 😄