Hi, 

You can watch following video for this:

https://youtu.be/ezH3ql5Dmx4

Thanks

since the beginning, it's not a decent solution to add dynamic domain. there is no communication between server-client when view mode change.
Odoo is removing all the dynamic domain from V14 :)
https://github.com/search?q=org%3Aodoo+dynamic+domain&type=Issues
​
have to add domain on many2one field with like 

options = fields.Selection(....)
my_m2o_id = fields.Many2one('my.model', domain=[('options',  '=?', options)])

Ah ok, this is an idea. 

I will add another field in my many2one model indicating the current value for which options is allowed and will assign the new fields values a per our needs. Thank you.