Hi @Anonymous,
There is a function which could use to get the information for the current user.
User function in PowerApps
For example, if the list tiem is assigned to a person, and there is a field (person or group type field) used to display who owns this item, then we could take use of the User() function to "Hide" the Auditor Comments TextInput Box.
Under the Edit form, first select the Auditor Comments datacard, at the right pane, click Advanced, choose to un-lock this data card, then Insert a Label box into this datacard, change its text property with:
ThisItem.Auditor Comments
Then find its Visible property, change it with the formula below:
If(User().Email=ThisItem.Person.Email,false,true)
Person field here should be the Auditor field in the SharePoint item.
Besides, select the original Textinput Box, change its Visible Property with the following formula:
If(User().Email=ThisItem.Person.Email,true,false)
This would allow to show the Comments Label when user is not Auditor, and show the editBox when user is Auditor.
Post back if you need any further assistance.
Regards,
Michael