Hi Emily,
It looks like your Screen on Title & Abstract codeset is set to normal (single user) coding, rather than comparison coding. This means once anyone codes something, it can be seen by everyone else. (See screenshot below.)
Looking at the Collaborate tab, it shows that some people have started screening items.
Clicking on any of these numbers will take you to a list of those items (e.g. the circled 25 in the picture will list the 25 items Kiran has already started coding in the Group 1 training set).
Clicking on any one of listed items and looking at the Coding record tab, we can see from the green tick that the item has already been coded and marked as completed.
Alternatively, you can also right-click on a codeset and select Display item frequencies (children) to see the number of items coded with each child code.
For example, in the screenshot below we can see how many items have been coded with each of the child codes from your Screen on Title & Abstract codeset. Clicking on Go or any of the numbers will again take us to a list of those items.
What you can do is mark any items that have already been coded as not complete, and then set the coding to Comprison Mode. That should set things up as you need them to be.
You can "bulk mark" all completed items as not completed, or do it person by person, etc.
(Note that this will NOT delete any existing coding, but merely indicate that the coding for the chosen item(s) is not marked as completed.)
To do this, click on the Review statistics tab towards the bottom-right of the screen, and then click on the relevant red "no entry" sign, as shown below (in this case - to mark the coding done by yourself (Emily) as incomplete).
You can also mark an entire codeset's coding as incomplete, using the relevant icon...
You can also do this via "advanced" options, by selecting the icon near the top of the list.
As well as marking the the existing coding as complete, you also need to change to Comparison Mode coding. Right-click on the relevant codeset, and then select Properties.
Finally, select the Change to Comparison data entry mode.
And all should be well!
Hope that helps, but do let me know if any problems. There is a lot more information on coding and collaboration in the manual (available from https://eppi.ioe.ac.uk/cms/Default.aspx?tabid=2933, around page 52), and in our short online training videos (available from https://www.youtube.com/user/EPPIReviewer4).
Kind regards,
Zak