Thank you so much for responding @Fubar .
So I have created a table called Digital readiness questionnaire and given Contact permissions to authenticated users. This works and users are ale to login, and capture their data. Acesss is as below.

However this only allows them to see their individual records. Each user has a lookup field created called "Department", a lookup to the account table.
I have then created a permission for authenticated users as below:

however this doesn't seem to allow me to see the records of other users even though i have setthe departments to be the same.
Am i doing it correctly?