Why is the admin option not available when I want to upgrade someone from "normal"?

[mariana steer]

I created a personal account so that my work account dont contain personal stuf. 

In orden to send my personal boards to my personal account, I made my personal user a colaborator of my personal boards. But only "normal" version of colaborator was available.. not admin. I need to make my personal user admin of my personal boards, so that after that I can delete my work user from being a colaborator. 

[Matthew N]

Hi Mariana

If you're admin of the board, you should be able to add additional users to the board either as Admin or Normal.  

Can you please try the same using a different web browser to see if you experience the same issue?