Hi for everyone, could you please advise how to add an object to a group?

As I remember somewhere read that there is some way of it without ungrouping, however now reading the Designer Pro help it seems that is needed

To add more objects to a group
Select the group.
Ungroup ("Ctrl + U")
Select the extra objects.
Group again ("Ctrl + G")

Basically this group is a repeating object on several pages so maybe would not touch that with ungrouping, but of course if there will be no other choice

thanks,