Solved! Go to Solution.
For your second question.
Select Spline either from the GUI or part navigator then Menu > Format > Group > New Group. You should be able to create a new group that contains the selected spline OR
Right click on whitespace in the part navigator and uncheck the option 'Timestamp Order'. Now select the top node of spline and right click. You will see the new group option OR
Hover the cursor on spline in GUI and again hover mouse on ' Spline of Curve-A' from QuickPick dialog and right click. You will see the new group option as shown in the image.
Hi @GaneshKadole Thanks for the list of solutions!