In the fields settings, you can define what information is displayed within each Module. E.g. client name and contract start date.
You can create fields from scratch or copy them from another one of your Modules using the “Load preset” option. Certain fields can also be marked as required.
Once you set the name and preferences of your custom fields, they display as static text fields within your Module and will be shown in all the Items you create for it.
Example of how Fields are configured within Module settings.
Example of how these Fields will look to the end user within an individual item (in this case a specific "Team Event").