Is there any way to get user role (not user name)?

Thank you SAU, great solution!
jlin, yes the idea was having filter with expression linked to user setup matrix. After running script you get the user role in the cell of some matrix. Then you can you use it in filter expression to visualize certain items for corresponding role.
But if users on the qloud work at the same time on the same matrix (multi-edit) it will probably cause a conflict.