This question already has an answer here:
Suppose I accepted an answer to my question, and then a real doozie got submitted later, and I wish to change which one is marked as "accepted"? Is this possible (if so, how)? Is it frowned upon? I couldn't find anything about this in the Help.
--- Edit --- The similar question proposed is helpful but I would like to leave my question here, if I may, because its specificity was helpful for me and will hopefully be helpful for others.