"Such instances" refers to specific examples or cases that are similar or related to the topic mentioned earlier. It is used to refer to similar occurrences or events that have been previously mentioned or implied. Full definition
I have an outstanding proven track record of results and continuous improvement in such instances in my career. (members.climber.com)
It is the density, not the composition which gives more or less opportunities for such instances of energy transfer between molecules whilst the incoming and outgoing radiant energy is negotiating the atmosphere. (newclimatemodel.com)
One category of insurance that is of importance for such instances when some head on collision or accident occurs is auto collision insurance. (autoquotenow.com)