Hi Anitaa
You were asking for help on the Forum and they have resolved your Combobox problem.
There are however numerous problems in every one of your tables.
If you use Teams and would like to chat through these problems then send me an email and I will send you a Teams Invite for a chat.
My...
Hi
In your Registrations Table you are storing all of the Subjects using a MVF
It is recommended that each Subject should be a Record in a related table.
Hi
I have given you the structure necessary to add 1 or more attributes. All you need now is to Google how to add attributes using the "Not In List" Event
Hi
Here is an example of what you are describing.
The Form that opens on Startup allows you to select / add a Property and then add 1 or more attributes.