Contact-related data can be edited by clicking on the link on the Contact details page.
All the general information of a Contact can be edited through the General tab.
Multiple addresses of a Contact can be edited through the Address tab.
Other significant information like the Lead Source, Department, Contact Image and Description can be edited from Other tab.
All the social links of a Contact can be edited from the Social Links tab.
Once you have completed the editing, click on to implement the changes.
Click on to nullify the changes made.