There is a way to add required data into the fast tab header so that you can view the required data without expanding the fast tabs. This can be done using personalisations.
Setting critical fields as required/mandatory fields
Designate a field to be required for data entry. If no value has been entered in this field, it will appear with a red border and an asterisk to indicate this state.
Create a workspace in D365 HR
Workspace is like a dashboard that will have a logical group of tasks that make up the work of a target persona or a role.
‘Saved views’ in D365 Human Resources
This article helps you to understand about the new concept "Saved views" which was released as an extension to the personalisations feature. With this, you can save the modified form into custom vews and also can be published to required security roles. Hope you will like it.