By Adding your contacts in Tags you can organize your contacts more efficiently.
Step 1: On your PC Go to ContactBook, And Log In with your account.
Step 2: Select a Contact which you want to add in Tags.
Step 3: Now Click on the 3 Dots in the upper right corner and click on edit.
Step 4: In the Add Tags you can see your previous tags or you can create new tags according to your needs. ( Select or create your desired Tag ) After that Click on the update.
Step 5: Yay! Your contact is being added to your desired tag. Click On Tags.
Step 6: Your Contact is Added to Tags.
Note: You can add a single contact in as many tags as you want.