Your fields are what contains your data. They belong to a collection, so in order to customize them, go to your Collection settings by enabling the Layout Editor mode.
Here's an example of what you'll see in the Fields tab:
Basic settings
As you can see below - (1), you can change how your field's name will be displayed to your users.
You can also add a description(2) which will be displayed when you edit your data via this field.
Other options are also available:
Read only: Enable if you don't want anyone modifying the data of this field
Filtering enabled: Disable if you don't want anyone using a filter on this field
Edit settings
This section is where you will adjust how you edit this field.
First, select a widget (1).
After selecting a widget, its settings panel should open automatically. You can however reopen that panel at any time by clicking on the cog icon (2).
List of edit widgets
A widget is an interface tool which will be displayed when you edit your data. Here are a few examples:
The list of available edit widgets will depend on the type of your field. Here is the complete list:
Field type
Available edit widgets
String
text input (default)
textarea
rich text editor
dropdown
radio button
file picker
color picker
JSON editor
address
Enum
text input (default)
dropdown
radio button
Number
number input (default)
dropdown
radio button
Date
date picker
DateOnly
dateonly picker
Array (of string, enum, number,...)
text input (default)
carousel editor
checkboxes
JSON
JSON editor
Point
Text input (default)
File reference
text input
file picker (default)
Reference
default
Display settings
Then select a display widget (1).
This is how you will control how your data is displayed in your views (table view, summary view, related data views, etc).
After selecting a widget, its settings panel should open automatically. You can however reopen that panel at any time by clicking on the cog icon (2).
List of display widgets
The list of available display widgets will depend on the type of your field. Here is the complete list: