Hi Hourshyar,
If you are new SAP EM and SAP TM integration then it is a steep path ahead to finish the project.
You can refer visibility process scenario to configure in SAP TM and SAP TM. Copy existing events and Z customize according to your customer requirement, however you will end up enhancements each and every event types which you configure.
SAP Event Management - Scenarios for SAP Transportation Management
I have attached below link where you can scroll and find all relevant which written by our SAP EM and SAP TM consultants.
If you stuck up anywhere on the configuration and issues, then let's know we can help you.
However, if you request step by step it hard to explain everything.
Regards
GGOPP