REG:DR DRILL

Dear postgres team,

Please clarify my question

4 servers it's working cascade replication

Segment1 another location and ip staring with different compare segment 2
Under the segment one 1 ips are there in that one primary another one is
slave

Segment 2 another location and ip staring with different compare segment 1

Under the segment 2 2 servers are there two also slave

Recently I have completed the switch over one in segment one1,

Now again we are planning do the switch over to the segment 2 and with in
the 24 hours we have to do the switch back is it possible to do the manual
switch over and switch back ,or else possible or not
If incase possible method is good manual or repmgr,
If not what is the reason

Could you give update on the team.

Thanks &Regards
Obireddy.G