Creating Twitter Lists
Step 1: Find your target profiles. You may want to start with Live X Account Search to find your target accounts or any other filtered view. Let’s say you’re on Followers / Following Management & Analytics > Following > Not Following Back.
Step 2: Select the profiles one by one by clicking on the checkbox at the left side on each row, or select all by clicking the “select all” at the upper left side corner of the list.
Step 3: Click Add to List (N selected) and choose Add to Existing Twitter List or Create New Twitter List. This will open the "Add selection to Twitter List" pop-up.

Step 4: You can either add the selected profiles to your existing Twitter List or create a new Twitter List.
Step 5: If you want to use one of your existing lists, choose one of your lists, then click Add selected to this list. All the profiles you selected will be added to your Twitter list.
Step 6: If you want to create a new Twitter list, give a shiny name to your new list, check Create private list if you want it to be private, and click Add selected to this list.
Step 7: Success! Now you can check your lists on the Lists page of your X profile.