Legalities for parties who are vision impaired

Tania asks:

I have an enquiry from a couple, one party is Visually Impaired. They would have the some of my ‘Welcome Kit’ translated to Braille, including the NOIM, DONLIM, OCM and Form 15. Therefore, I am comfortable that the party would be aware of what they will sign. But … How would the signing and witnessing actually work? Would having a Braille interpreter at the Signing who could tell the party where to sign be a legal solution?

<