Hi Daniel,
You can find the streams by using the Structure (Sim) tab/window with the Objects Window. Look for the items that are blue cross.
You can do the following:
add wave /uvm_root/uvm_test_top/ubus_example_tb0/ubus0/bus_monitor/main
add wave /uvm_root/uvm_test_top/ubus_example_tb0/ubus0/main
add wave /uvm_root/uvm_test_top/ubus_example_tb0/ubus0/loop_read_modify_write_seq
add wave /uvm_root/uvm_test_top/ubus_example_tb0/ubus0/slave_memory_seq
rich