The Contract Admin option is available under Contract Portal Settings.
Clicking on Contract Admin opens the below page.
Select a group and click ‘Save’.
The admin can be one among the groups created in PageLightPrime settings.
If only one user is to be the admin, then the group must be created using that single user and the same must be chosen in the contract admin group.
Only the Contract Admin has the highest level of access to the created contracts.