Pro Features
A custom field is a field you define yourself, on top of the built-in fields. This page adds a custom field, chooses its type, and uses it on a record.
CRM concept: No two businesses track the same details. A custom field lets you store the data that matters to your business — a contract number, a renewal date, a preferred contact method — without changing code.
Add a custom field when you keep writing the same extra detail into notes. For example:
A structured field beats a note, because you can filter and report on it.
Renewal date.
Pick the type that matches the data. The type controls how the field looks and what it accepts:
Note: Choose the right type once. The type shapes how you filter and report on the field later.

After you add a field, it shows on every record of that type.

A workflow can read a custom field in a condition and can set one with the Update field
action. For example, branch a workflow on a custom Plan dropdown.