While assigning a point or line code to a layer within Feature Definition Manager, you are able to edit the name/colour/line-style/group etc. However, I am unable to create a new later group.
I created the layer table from scratch i.e. didn't import a pre-prepared table, so cannot understand why I'm not given the '<<New>>' option? In the below example, I have 2 groups from an old project and <<None>> as my only options.
Is there a way to access this and add/edit groups, or do I have to create a layer table in a blank project and export it first?