The phrase "about one instance" is correct and usable in written English.
It can be used when referring to a specific example or occurrence of something, often in a general context.
Example: "In our discussion, we will focus about one instance where the policy was successfully implemented."
Alternatives: "regarding a single case" or "concerning one example".
I am not worked up about one instance of one person leaving and being replaced as long as it is based on merit, and not on personal preference".
In a recent interview, the singer opened up about one instance in particular that made her realize she needed to get help.
His case only caught the public's attention for a few days because Crowley, the former State Department employee, had the bad judgment to speak the truth about one instance of pointless cruelty.
Charlotte found that her employer was less than understanding; 'I ended up having to tell them about one instance because I was in A&E and they wanted to know why I wasn't coming in, I panicked and told them, but they were insensitive and more interested in when I was coming back to work.
"I think I just didn't realize how deep it went," he said, then added, "I think this movie punctuates the depth of those feelings — this is not about one instance of injustice, of a black man convicted or a white man not convicted".
It ended with no criminal or misconduct charges being brought against Adams but lists concerns about him, in one instance describing his conduct as highly questionable and unprofessional.
Operation Russell ended with no criminal or misconduct charges being brought against Adams but listed concerns about him, in one instance describing his conduct as highly questionable and unprofessional.
Money was offered for interviews or records of the discussions in the early hours of Wednesday: in one instance, about €80 for an on-site interview.
This information about each MB is one instance to understand.
In one instance about 200 years ago, Moniz pointed out, an inmate was charged with causing the murder of a man in the next cell.
Yes, I watched a video of Captain Moore talking about the vortex, and in one instance he was holding water in a jar.
