To move a register field between tabs, navigate to Tools>Privacy>Register Management, and click on the Edit button beside the relevant register. On the field you are looking to move (to another tab), click on the arrow icon:
A list of the other tabs within the register will appear. Select the relevant tab that you want to move the field to, and then click Move Field. Click Confirm on the message confirmation message that appears:
The field will then appear within the top section of the tab. If required, you can then move the field to another section within the tab by clicking and holding the 4 arrows symbol:
Then drag/drop the field into the relevant section:
Before exiting Register Management, please remember to click the green Save Register button, located at the top and bottom right of the page, to ensure all changes take effect: