Beeing relaxed at home

At the moment we have two things we are working on.

Beeing relaxed at home when mummy is working at home as well.
And stopping jumping and biting when we arrive at home.
The jumping will be a seperate post soon.

I have discussed several strategies with my friends and I do not like any kind of box training. Boxes with open doors are great but do not help in my particular case.
Training relax on a mat with treats is also no choice because Lisbeth only gets food focused and doesn't learn anything. Capturing calm behaviour is one important part in our daily life but no special help for this particular problem.
So what is the situation at the moment and what is the strategy we are working on.
We often have the problem, that Lisbeth doesn't relax when we are at home. Then she wants our attention and tries anything to be successfull. Preferably she is chewing the chair or the table.
For a stressed dog as Lisbeth it is important that she clearly understands what is going one so you need a good training concept that she does not get frustrated. So we are working on two different behaviours. One is to train relaxation on leash. This means whenever I start my computer I put on the harness and the leash. Take Lisbeths blanket and something to chew she really likes introduce a special cue and Lisbeth gets her chew. As soon as she stops chewing I unclip the leash and stop the training session for relaxation. This behaviour and cue should help Lisbeth in the future to relax on her mat in many situations.
The second thing is the nothing happens when mummy is working. Therfore I have prapared a collar with lavender instead a verbal cue. When I put on the collar she gets almost no attention. She can come to greet me but I won't play with her or pet her. I have started the program after a good walk when I was pretty sure she is going to relax. Normally Lisbeths rests 1.5hours until she gets active again. After this time I remove the collar and we are doing something together for about 10 min. Then I put on the collar again and the no attention time starts again. I have started today and so far she did quite well. I have to watch this for a longer period to be able to assess this program.