You can define the sequence in which the table setup records are applied.
Usually, in the table setup records, you can have:
One record for each table and form combination (form-specific).
One record with only the table defined and no form (table-specific).
The table setup records are applied in the sequence as defined in the table setup. The first applicable table setup record that is found, is applied.
You can have a table setup for the same table with both form-specific records and a table-specific record. In this case, you are advised to have the table-specific record applied as the last one. Otherwise, the form-specific records are not applied at all.
Steps
Go to Dynamic field security management (Preview) > Policies > All field security policies.
In the list, click the link of the desired field security policy.
Click Edit.
Expand the Table setup section.
You can move up a table setup record.
In the list, find and select the desired record.
Click Move up.
You can move down a table setup record.
In the list, find and select the desired record.
Click Move down.