Guidelines for a ghusal khana

Q: A ghusal khana was constructed in our locality. We want to put up a poster on the wall with a few guidelines regarding the ghusal khana,for example:

1. There should be no mixing of males and females.

2. Only those carrying out the ghusal and those assisting in the ghusal should be present, others should wait outside.

3. Silence should be maintained in the ghusal khana at all times.

4. No item of the ghusal khana should be removed for personal use.

5. No pictures or videos should be taken at any time.

We would appreciate if you could please correct and approve the above together with adding more points.

Shaikh having a WhatsApp group for females

Q: My question is regarding mixed whatsapp groups.

If such a group is created where there is only females and the shaikh as members. No one talks on the group besides the shaikh who sends Islamic messages and audios (majlis, dhikr, etc). There is no informal discussion not even formal ones with question and answer etc. It's just messages being sent by one person. Will it then be permissible to be a member of it? So far I thought mixed group are not jaaiz but maybe there are some permissibility that I am unaware of.

Cornea transplant

Q:

1. Is it permissible to undergo a cornea transplant? The cornea may be from a recently deceased registered tissue donor, or it could also be artificial.

2. If an artificial cornea isn't suitable/compatible and/or cannot be used, will it then be permissible to use from a donor?