Single row selection in form table

[papka1974]

Hi,

I'm new in Budibase and in this area at all. Trying to create simple screen with 2 tables. As a data source I'm using API calls (I'm using Firebird database and didn't found and option to connect to it directly). So I created 2 queries and connected each of to form tables. Now, i would like to limit rows selection with checkboxes only to one in one of tables and after selection refresh second table data source. I saw that should exist option "Allow rows selection" or something like this, but I can't find it.
I'm currently on self hosted version 3.16.2 (akrasnov87/budibase).