I have follewed the steps listed below:
To set predefined field values:

• Click the name of an action in the Buttons, Links, and Actions list or the Global Actions list.
• On the action detail page, click New in the Predefined Field Values list.
• Select the field you want to predefine a value for.
• Specify the value for the field.

However whne I click NEW

There is no option listed to choose.
Click Save.
 

Hi Experts,
I am trying to solve this challenge but not able to solve because of salesfore license issue. Salesforce only allows 2 'Salesfoce' license for DE. Is there a way to solve this challenge? Please help.

Create a Profile and Permission Set to properly handle field access
The Marketing Coordinator and Account Manager both require access to view and update Account Records, but only the Account Manager should be able to see and edit certain fields. Specifically, only the Account Manager should be able to see and edit the Rating field. The Marketing Coordinator should not be able to see or edit the Rating field. Create one profile and one permission set with the appropriate field-level security to solve for this use case.The profile must be named 'Basic Account User' and result in an API name of 'Basic_Account_User'. It should use the 'Salesforce' user license type.
The permission set must be named ‘Account Rating’ and result in an API name of 'Account_Rating'.

This task, creating a Static Resource from:
Download the current version of the jQuery Mobile JavaScript library, currently jQuery Mobile 1.4.4, in the ZIP format.
The newest version, 1.4.5 is 7MB and of course does not upload.