Add or delete one entry on one to many relationship

Hello,I’m using rest api and test all from postman, is it possible to only add or delete one entry of one to many relaationship? for now when I want to add one value in relationship, I must get all exsisting relations and add the one, and update the row

System Information
  • Strapi Version: 3.6.2
  • Operating System: Windows 10 x64
  • Database: MongoDB
  • Node Version: v10.15.3
  • NPM Version: 6.4.1