If you have both manager and surfer roles, you can switch freely between the two accounts in Surfboard.
In the manager account:
Click on your avatar in the top right corner of your screen.
Select 'switch to surfer'
You'll now be taken to your personal surfer account.
In the surfer account:
Click on your avatar in the top right corner of your screen.
Select 'switch to admin'
You'll now be taken to your company's manager account.