The home will be assessing to see that they can meet all of your husband's needs. When my Mum was assessed they just came in and spoke to the ward sister about any specific care needs and said they would take her. It might be useful if you are there when the assessment takes place, and if you haven't already done so conduct an assessment of the home yourself to make sure that your husband's needs will be met. Look at things like staff to resident ratios, are other residents at a similar stage to your husband and how caring the staff are. As your husband is at severe stage make sure that they are also able to meet his future needs too. Don't let the fact that their residents can go to the day centre be a deciding factor. (I see from your previous thread that your husband is not self-funding and the local authority are paying for his day centre. You may find that they will not continue to pay for this once he is in a home)
In my Mum's case the hospital wanted her out and it was all done very quickly. The home assessed her and she was discharged the next morning without giving me time to visit the home for myself. Although they said that they could meet her needs the home was really not the right environment for Mum and she was subsequently moved after 3 weeks due to safeguarding issues. Some homes will say that they can meet someone's needs when in fact they can't, and it is very disruptive to have to move someone to a new environment so it's important to make sure that you are happy that they are the right home for your husband.