Go to the list of your co-author's publications, open each publication you co-authored and click on "More" -> "Claim authorship". See https://explore.researchgate.net/display/support/How+to+add+research for more instructions. You may also visit https://www.researchgate.net/profile/Sindhu-R-3/unconfirmed (visible only to yourself) to see whether there are publications in ResearchGate not yet assigned to your profile - although this list may not be complete.

To add your publications on ResearchGate using your co-authors list, you can follow these steps:

Log in to your ResearchGate account. If you don't have an account, you can create one for free at www.researchgate.net.

Once you are logged in, go to your profile page.

Look for the "Publications" section on your profile. It is usually located towards the top or in the sidebar.

Click on the "Add new" or "Add publications" button. It may be represented by a plus (+) sign or a similar icon.

In the publication form, you will typically find an option to search for co-authors. Look for a field labeled "Co-authors," "Authors," or something similar.

Enter the names of your co-authors in the provided field. ResearchGate will search its database and display a list of potential matches.

Select the appropriate co-authors from the list. You may need to confirm the selection by clicking on their names or using checkboxes.

After selecting your co-authors, proceed to fill in the remaining details of your publication, such as title, journal/conference name, publication date, and abstract. Provide as much information as possible to make your publication easily discoverable.

Once you have entered all the necessary information, click on the "Save" or "Add" button to add the publication to your ResearchGate profile.

Repeat the process for each publication you want to add using your co-authors list.

By utilizing the co-authors list feature on ResearchGate, you can streamline the process of adding multiple publications to your profile, especially if you have collaborated with the same set of co-authors on multiple papers.