"Custom relationship" fields represents a relationship between two people in the organization. This field may be valuable for you if there are people outside of a manager-direct report relationship that need visibility into an employee.
To Create a Custom Relationship:
Step 1: Navigate to the "People" page found on the "Admin" panel
Step 2: Click on the "Custom Fields" tab
Step 3: Click on "Create custom field"
From here, you can give your custom field a name and decide what kind of field is it, by choosing "Custom relationship."
After you have created the custom relationship, you will be taken back to that "Custom Fields" page, where you will see that field listed (as shown below)
Filling in user data and applying this relationship
To bulk change the custom fields of many employees at once, admins can upload a CSV (also from the People page on the Admin Panel) by clicking Upload CSV. In the CSV, be sure to have a column for the custom field you want to change, and that all of the values for each employee are a valid option for that custom field. To upload a field that is a custom relationship, use the email address of that user in Lattice to designate the the relationship in the CSV.
To apply the custom field manually (without uploading a CSV), first, navigate to the People page in the Admin panel. Second, find that employee you would like to give another employee visibility into, and click on the ellipsis to the right of that employees' name. Lastly, click on "Edit profile" from the dropdown.
After you have clicked into the employee profile to edit it, you will see the custom relationship you have created listed under "Custom Fields." Here, you can add the employee you would like to grant visibility to. For example, if I want to give Kevin manager visibility into Preston's profile, I will want to 1) click in to edit Preston's profile, and then 2) add Kevin's name under the "Manager Visibility" custom field I created.
For more information on what visibility this gives, check out this help center article.