I need an Apex App Builder Expert

Job ID: 34482127

Budget: $25 – $50 USD

I am technical, but entirely new to Apex. I have a set of things I need to modify in my test page in Oracle App Builder to better understand what I'm doing. Essentially, a type of tutor role for maybe 2 hours in specifically:
-I want to have a form populate from a search text field SQL query. I created the form items and matched them up to columns, but they do nothing currently.
-Link an interactive grid to a specific form item used as key. One of the form items is a key that should be passed in. Unfortunately, it seems passing a "Master" key is for interactive grids, not for forms. I need the interactive grid to read and load based on the form's value.
-Create a custom option to add to a list of values, when the option is not listed. I created a list of values populated from a lookup table in a database, but no way to have the drop-down provide a "add new" option, to add another entry.
Related categories: Oracle Database Oracle APEX