Multiple Attachments in Project Master via UDT & UDO

Hi,

I have created a UDT for Attachments for Project Master, with fields like Document Type, File Path, etc.

I have registered the UDO for this table.

Now how do I link it to Project Master, so that I can open the UDT form from the Project Master?

The requirement is to have multiple attachments per project.

I tried to create a UDF in Project Master with Type: Alphanumeric, Validation: Linked to Entities, and Link to UDO.

This UDF shows as a normal UDF in Project Master, so what is the use of Linked to Entities.

I am doing this for the 1st time, so a step by step guide will be helpful.

Thanks.