VI/blind folks are exacting about placing things and being able to find them where they left them. If you're working in this person's space, be mindful of leaving/replacing things where you found them. This applies to organizing things for them. Be logical and generous with labels that your person prefers if you have no guidance from your person. Likewise, be prepared to learn how they do things rather than using what works best or what you yourself prefer. Also, in giving directions, be specific. So many steps forward in which direction, left hand to table, papers at 9 o'clock, for example, if you're in foreign territory. Be creative about making things accessible, too. Your person will have methods but you might need to MacGyver a solution in a crisis moment. Make NO changes to placement or labeling without express permission. Can't stress that enough.

What makes me feel best about helping someone is finding ways for them to do a thing effectively without me. This doesn't mean abandoning them to the wolves at a huge conference, but it does mean being as invisible as possible while they shine.

I'm a second generation blind/VI. I always thought these were laws of nature growing up. Had no idea non-bats put things away willy nilly or didn't have assigned storing spaces for canned goods and such. Y'all live dangerously, indeed.

You sound very experienced with disabled individuals so I am sure you know this first most important tip: don't offer help all the time wait for the disabled person to ask.

An important issue for myself that I am sure this government worker has solved is what format to receive information in, whether it's through magnified print on CCTV, or through screen reading programs like JAWS, Voiceover, NVDA, etc or my personal favourite through Braille documents and Braille display screen. You may have to do more scanning of documents for your blind employer.

Thirdly be as descriptive as possible, maybe watch descriptive captioned tv programs/movies to get hints of how to best be descriptive. Make sure your blind employer knows everything in the room, and for instance how many people are around, where the tables, chairs, podium are, what landmarks there are in the building.

I am certain you will do a great job, I have no experience in government, just stating what I have learned from being a totally blind man going through the education system through my Bachelor's at university.

Adults who are blind are blind. That's it. We are not stupid, deaf, helpless, or children. Please do not talk to us as if we are. That's my biggest pet peeve about the government and medical staff I have come in contact with.
Please put things back where you found them, keep the path clear, be descriptive, and leave room for humor in the relationship.