Creating Custom Link Fields

Users can create Custom Link Fields within DocTypes by following these steps;

Step 1: Go to Customize Form in Setup Module.

Setup >> Customize >> Customize Form

Step 2: Select the desired form in Enter Form Type field.

Step 3: In the Fields section;

Insert a new Field row and set the attributes as;

Label: Desired label that user wishes to display in the form
Type: Set as 'Link'
Name: Desired name for the field
Options: Enter the name of the Doctype to which the field is linked

Note: Please refer to https://frappe.io/kb/customization/form-architecture for more information about the form structure