To add "Contacts" to Release Control (or the former Release Manager), follow these instructions. Though written specific to RLC, the procedure described here could be used to reference any item with any other item.
Optionally, download and extract images in attached "images_HowToContacts.zip" archive to view "img#" references in this article.
The default "Contacts" auxiliary table is in "Global" application. If you intend to use a different contacts table located in another app, simply reference your app instead of "Global" as you follow the instructions.
Attention - Decision must be made here. Please review this section carefully.
There is a system Contact field which is single-relational which ONLY works with Global contacts table (option α). If using a different table and/or app, you can also create your own single-relational field (option β). In either case, you can create your own multi-relational field (option γ).
If you think or know you want to present data from the contact, it is recommended to use α or β. You will be limited to one contact per item, but can add Sub-Relational fields for any column of the Contacts table.
If you think or know you need to allow multiple contacts per item, you will need to use γ. You will not be able to add Sub-Relational fields for presenting the data.
To cover both cases, consider doing α or β as "Primary Contact" and γ as "Secondary Contacts" - this allows you to present extra primary contact information on forms via Sub-Relational fields but doesn't limit each item to a single contact.