To add new controllers, we can navigate via "Add controller" button:
Step 1
Here we can select the controller by either:
Searching for Universal Profiles
Directly pasting in the address
Step 2
I've now selected @feindura profile as the controller and selected "Call" permission - click create and confirm the transaction to set @feindura as new controller to the profile.
Step 3 - Create
Congratulationsπ
You can now manage controllers or add new ones to your profile!