There are 3 methods how to unlock the locked objects in the database:

1) The "Unlock objects on Start" parameter in the Global settings of Cinegy Archive Manager. This option allows to unlock all locked objects on Cinegy Desktop launch if they were locked by the same user. More information you can find here:
https://open.cinegy.com/products/archive/15/archive-manager/user-manual/server-database-settings/gl…

3) Unlocking through the "Unlock" command from the context menu in Desktop. It should be done by the same user who locked them. More information is here:
https://open.cinegy.com/products/desktop/25.3/desktop/user-manual/exploring-database/locked-items/

3) The "Unlock nodes" command in the Actions tab of the Nodes Explorer in CAM. This action can be performed by the database admin. It is also possible to unlock all descendants if you select "include all the locked descendants" checkbox. The corresponding article: 
https://open.cinegy.com/products/archive/15/archive-manager/user-manual/nodes-explorer/#actions