You can keep a candidate's details accurate from their profile's Overview tab. Most information is edited inline on the cards there.

On the Contact card, click the pencil to edit emails, phones, links, and location. Each opens an editor holding the whole list, so you can add, remove, or reorder values and mark a primary, then Save once. (For blue-collar candidates the phone is listed first, since that's usually their main channel.) Each field also has a copy button.

On the Details card, use the pencil next to the source to correct where the candidate came from. The original is kept — the change is recorded in the Activity trail rather than overwritten.

On the Tags card, attach labels from your company's tag catalog. (Tags are created in Settings; here you attach existing ones.)

The Profile fields (university, faculty, years of experience, languages, and so on) are parsed from the CV and are read-only. To refresh them, re-parse or upload a new CV from the CV card — see Re-parse or Upload a New Resume.