Can you edit source segments in Trados Live?

If don't care if the source text is being manipulated, I just want to go into the source segment to correct a typo or make a word bold. Can that be done?

Can I set up my document/project to allow source editing?

In Editor there is a feature called Edit Source (Alt+F2). I click on it, the selected segment turns light blue, but I can't do anything to the source text.