Delete Assignments for Custom Fields in Segmentation Hybris Marketing 1702

Hi Experts

I have added some new custom fields. Then using "Add Custom Fields in Segmentation" I have created an Assignment which has the follow features:

-Business Context: Marketing Attributes for Persons -Segmentation Object: All Account -Segmentation Profile: All Accounts

There are some unwanted assignments which I want to Delete now. Can someone please let me know the process to delete the unwanted Assignments. I cannot find any button on Fiori to delete the same. The below image highlights what i am willing to delete