Custom Field / Autocomplete - Data not saving

Hello,

Under Custom Field > Workflow > Members, I've added custom field 'Auto Complete' for 3 fields:
- Title
- Company
- School

However, when I enter data on the front-end the data I enter does not save. (There is no data that populates, as well. I was assuming that data entered is what creates the future auto-complete).

Dropdown list -

Also, is there a way to upload many fields for your dropdown lists such as years from 1930-2025? Or do I have to enter each option manually? (see attached screenshot)