Hi There!
Thanks for contacting us.
Which template you are using? However, assuming Helix Ultimate framework, actually, there is no default way to do that as per my knowledge. It requires PHP code customization either, and customization support is prohibited here.
I can only give you the path where you need to edit code to change the Logo URL.
To change the logo link you have to edit this file: /templates/Your_Template/features/logo.php
OR,
You should create custom Header. Add in it, for example, 'user1' position instead of 'logo' position. Cteate custom module with linked logo image and place the module in user1 position. Also most likely some improvements will be required through CSS.
Hope this helps anyways!
Best Regards