Which tools used by SAP development project leader ?

The development project leader

creates a project and activates it to record transport requests.
Then the leader creates the smallest number of transport requests possible for this project and
then assigns the developers to the transport requests.
The development project leader is also responsible for the later release of the transport requests
once the relevant development is completed.
The release of the transport request is not performed automatically.

The developer`s

make developments for their transport requests, which in turn are assigned to
a project. This may concern creating or changing repository objects or customizing settings.
The developers work in the development system.