No, locking off records (i.e. rows) from collaborators is not currently possible in Airtable. You would need to use a portal tool like MiniExtensions.com or Softr.io to handle that.
Hi @Thomas_Giegerich
A simple way to do this would be to give the Security People a form link instead of the entire base (saves you on user counts too)
Set up your People table, with all the details that you need to keep.

Create a new table called Testing Data. In this table we add a column that is Link to Another Record and choose People table. No other look ups.
Then add a Date field. (Name column is a formula with People as the formula.

In the Testing Data table add a Form view and only put the People and Testing Date in the form. Since the People field in this table is a Link to Another Record, we will be able to get a list of all people.

Here is how the Form will look to the Security Person

- Back on our People table we need to add a few more options so that you can see what was sent from the Security Person. When we added the Link to Another Record in step 2 Airtable automatically created a link back in the People table. Lets add a lookup to this and Lookup the Date of Last Test field.
You may notice that if a person gets more than one submit from the form, there are multiple days listed. Lets clean that up to only show us the most recent date.
- Add a Roll Up field in People table. Roll up the looked up Dates of Last Test and use the Max(values) formula

Now we only see the most recent date for that person.
Your People table will look like this

And we can hide anything that we dont need to see:

Moving forward, give the link to your Form to the Security People you can find that by selecting the form and choosing Open Form. People with access to the published Form do not have access to your Airtable base and will not cost you a user license.
