The meaning of Buddhist altars

In the first place, a Buddhist altar is a place where the principal image is enshrined, and the seat plate is rented under the eaves, but I think the Buddhist altar that Mr. Lemon has an image of is a place where the seat plate is enshrined.
I think there is a fundamental difference in interpretation of the idea that my father-in-law says that I don't need it because it will eventually become unnecessary.
However, if it is a Buddhist altar as Mr. Lemon would seem, I would like you to consult with the family temple (the temple where the funeral was held).
Also, I hope that a memorial service will be held.

　Thank you for your question. It really means that the ashes will be buried on the 3rd anniversary, and I am sorry for your understanding.
Now, about the issue of the Buddhist altar, I think it would be better to ask the chief priest of the family temple (Ganji). It's definitely not something to be ashamed of, and the chief priest I visited was also a learning experience, so I think it's good.
I think it's amazing that people have actually been visiting the moon at a Buddhist altar until now, but it's a question of whether or not a Buddhist altar is necessary after the ossuary, but it's inevitable that they have a relationship, and it's inevitable that the denomination is different, but I think that the Buddhist altar is not only for memorial services for those who have died, but also for thanking our ancestors and for us to be grateful every day, so I don't think they'll be disposed of. If it is difficult to enshrine a Buddhist altar due to social conditions, it may be changed to a small, furniture-like Buddhist altar, or they may pray in the morning and evening with a name enshrined. Other than that, there are also places where you can pray for your ancestors at the family temple (Ganji) and the head temple of each sect called the Eitai Sutra, so please refer to them. Gassho

Hello Lemon, my name is Kazumasa Takayama.
You're thinking about burying the remains of your husband who survived Heisei by the time it becomes Reiwa. Also, after the ossuary, they discussed Buddhist altars and places to put hands together.

Now, the main hall at the temple and the Buddhist altar at home show the majesty of the Pure Land, but what is essential of this is the principal image. Therefore, it is said that they are welcoming the three-fold principal image, so it can be said that it is equivalent to having a place for worship and nenbutsu, having a Buddhist altar, so to speak, and having the main hall of the temple there.

Of course, if Lemon can help you do nembutsu, you can welcome them to a Buddhist altar with decorations representing the Pure Land. “There will come a time when the Buddhist altar will get in the way, so it's not necessary” is just one of my father-in-law's opinions, and that is not the answer.

Whether you welcome a Buddhist altar or not
While looking at the homyo axis and thinking about your husband,
Live a day when you share your hands with the principal image, pray, and say nembutsu.

Shomyo Nembutsu

But if you need something like a Buddhist altar
There are also things like this.
Just for your reference.

http://guga-gubutsu.com/archives/2876/