There are more people who now have the courage to seek a job again. There are many people who are living without a disability but suddenly find themselves in the situation. They then lose their job and now they do not know how they can live as they cannot be employed. Now, with the growing awareness and the help that could be given are being recognized so they could also work and share their talent. There are people now with disabilities who are already employed.
How can you give them help then? Being considerate is one of the keys. If you will set a meeting outside of the office, think of the time, effort and how he could go there. Looking for a place where he can go comfortably is a good thing. You can ask them themselves and listen to what they say. When you are also having a conversation, be prepared of the knowledge on the terms that you should use when you will describe or discuss things about disabilities related to them.
If you also want to give help, you can kindly ask them. Certain disabilities require some sort of specific help. The working space that could be provided for them could have some adjustments so they could comfortably work. The tables, chairs, computer and other things they will need might need some upgrades. For blind people, they can have the specific computers or keyboard to use specifically addressing their needs. It could also be the location of the working space.