PIP & working.

Hi
I'm helping a family member with a PIP telephone assessment due 19/7/24.
It is an application based on mental health issues, the applicant has managed to work with sometimes reduced hours & extra support, & a substantial amount of time spent off sick, which they are currently.
I am concerned that the fact that they have been able to hold down a job, may actually work against them at the assessment.

The concern is because I am wondering if the assessor will see any work activity as an example of capability, which will cancel out what we are trying to demonstrate for difficulties experienced in daily living.

I am not sure how much they would normally focus on what a person does for work. If you have any advice in this area, I would be very grateful.
Thank you.