You have successfully installed DAA agent and not its time to configure manage system.
For manage system configuration open SAP soltion Manager work Center and navigate to SAP Solution Manager Configuration >> Configuration >> Managed System Configuration
Select Solution Manager ABAP system and Configure System
Note: I am showing Full configuration on this document
First of all Assign Product
Execute all automatic activities
First create technical user in managed system by going in to Maintain RFC Step
Assign DAA agent and check host agent
Enter System Parameters
On this step you need to configure DB Parameters for any issue on this step please look at Troubleshooting the errors when setting up remote SQL Server via SOLMAN_SETUP
Enter landscape parameters
Maintain user (Automatic step)
Finalize Configuration step (Automatic + Manual)
Once you configure ABAP system next step to configure Solman Java system cinfiguration.
We are going to look that in to next document
Thank you for reading