Observe the following rules when giving names to limbs and limb groups in the Staff Dialog. You edit names by choosing the Edit Limb Name or Edit Group Name button from the dialog's toolbar.
Therefore the program will not accept duplicate group names or duplicate limb names within one group. However you may have limbs under the same name in different groups (e.g. a limb called Foot in a Right Leg and Left Leg group). Also you may associate different performer names to several limb groups of the same name, and by that ensuring a unique group name definition.
When selecting a name from the list you can easily add Right or Left by clicking the appropriate button on the Button Bar.
When adding or removing limbs or limb groups, symbols of the old staff will be copied to rows with the same limb name even if they appear at a different place in the staff.
Therefore you should refrain from changing a staff's format and renaming limbs in one action. Information contained in the staff's cells could be lost. Instead you should choose the Edit Staff command twice.