Field options
As well as a name and a type, each field has a few simple on/off options that decide how it behaves. They're all optional — the defaults are fine for most boxes.
The switches
- Required — the box must be filled in. An entry can't be saved until it has a value, and it can never be left empty afterwards.
- Allow empty — the box is allowed to have no value at all. (This doesn't work together with Required — a box can't be both.)
- Read only — the box can't be changed by anyone, and won't be changed by other actions either (such as importing from an Excel file). Use it for values that should be set once and then left alone.
- Unique — the value must be different from every other entry's. Useful for things like a reference number that shouldn't repeat.
- Show copy button — adds a small button next to the box so people can copy its value in one click.
Making a value fixed
If you want a value that's set once and never changes, the app suggests combining Read only + Required + a Default value. The screen's own More information link explains these in the same plain terms.
Visibility
The Visibility setting controls who sees the box:
- Public — everyone who can see the object sees the box.
- Private — more restricted.
- Hidden — kept out of sight.
When in doubt, leave it on Public.