Watch this video to understand the process more effectively.
LinkedIn Group User`s Name Set Up
A user can add one or multiple LinkedIn Group accounts under the master account. From the profile drop-down menu, you will find the LinkedIn Group User option. Click on it and check if any LI page/Group is already added or not. You can add a completely new page/group here by clicking on Create LinkedIn Group.

Then, write the account name and click Submit.

A new account will be added. Now link up a new LI Page/Group to make the account completed.
LinkedIn Group User`s Profile Picture
If you are a LinkedIn Group user and the icon of a group/page is available via API. You can use the icon of the group/page as the LinkedIn Group user profile picture.
First of all, log in to the master account and switch to the LinkedIn Group account.

You can apply it for the existing one or create a new LinkedIn Group user under the master account. If you create a new one, you can link a LI group/page with it and apply the self-onboarding tour feature.

Since the RFS system updates the user profile image, if a user already has an image uploaded and connects with a group, the system will replace the user's uploaded image with the group image. This process always affects, when a user is connected to a group/page (both masters and LinkedIn Group users).