Break the Glass Solution Design

Hi,
Can anyone suggests how Break the Glass solution should be implemented/designed for PAM solution when PAM is integrated/depend with multiple systems(AD, other directory systems , MFA, network etc)..
In this case should we consider BTG solution as per different use cases or always we should consider one BTG solution for many failures/outages.

You can suggest for Safeguard also.. 

Say below use cases can arise--

1. PAM SPP service is not working 

2. SPS is not working

3. AD integration is there and AD is not working..

4. MFA breaks to login to PAM

5. Network outage where PAM is sitting..

etc..