Same as customize Dashboard, we may also customize User Interface(UI) in SAP Business One. UI changes can be made by editing the form in the UI template. Some changes can now be made in the form settings window.
Edit form UI
Open the form you want to change and choose Tools > Edit form UI.
Here you are able to add, delete, move or hide a field or make a field inactive like below. See the difference with the picture above.
UI Configuration Template
You may also customize UI by click Administration > Utilities > UI Configuration Template.
Here you may add forms and Assigned Users. Different UI templates can be created for different sets of end users. The template is assigned to users by name. These users will see the modified forms when they open the relevant window.