From the xCenta Dashboard, click on 'Tool's > 'Admin' on the top right of the screen.
A new window will appear. Click on 'Manage Users' on the left hand side of the screen.
On the Manage Users screen, select the appropriate user by clicking on the 
icon on the right hand side of the screen.
A new window will appear, select the Forms tab. Next, click Re-assign Forms.
A new pop up will appear, on the left choose who you want to re-assign the form to, in the center click the box adjacent to the form(s) you want and finally click Update on the right hand of the screen.
If you are unable to follow these instructions, you may not have the required user permissions. Please contact your Site Administrator.