Thanks very much for the offer of assistance, it is much appreciated.
I managed to access the various items after unlocking the base plan.
The items had nothing to do with the base plan and most of them were in level 1.
I don't know why the 'lock' happened and was not aware that a lock on the base ...

Some furniture in the scene can no longer be selected.
They appear in the furniture window and in the scene but can not be selected either in the scene (by mouse) or by clicking on the item in the (furniture) select list or by selcting an item above and scrolling down.
The scene has two levels and ...

Oops - found solution now - need to turn on view all levels - apologies for the waste of time.

Having constructed two levels I am having problems with the 3D view (Virtual View). The section of roof which was created in Level 0 but modified in level 1 (I am creating a loft conversion) is not visible if I do a virtual view at level 0. None of the 'furniture' (these are rafters etc created ...

This house (bungalow) was built in 1964. The builder lived here until 6 years ago. Considering some of the properties I have worked in this one is pretty good, the roof structure would probably withstand a local nuke.
The kitchen however was originally an outhouse (no doubt to do with tax structures ...

Thanks for the advice, solved it by using external mouse rather than (finger board ?) thing.
The joists are existing so they dont follow the 40cm standard gap i.e. 40.5 41 41 39 40.5 etc etc. great fun.
Must admit I was also trying to set them at 40.5mm initially - well had been putting in loft door ...

I am trying to set the centres on joists, using the mouse the distance (dimension) jumps up and down too much - 30 minutes to set three dimensions.
I am working in millimeters - have zoomed right in but finding some dimensions i.e. 41mm challenging.
Is there a facility to edit the dimensions by ...