setting up coverage can be “tricky” I’ll give an example:
imagine 4 users A, B, C and D
A - missed calls forwarded to B
B - missed calls forwarded to A
C - missed calls forwarded to D
D - missed calls forwarded to voicemail
A and B form a loop and the call never goes to voicemail.
C is covered by D, but D is not covered by anybody. No loop, but ideally we want D to be covered as well in this hypothetical.
The solution:
call queues.
Imagine 4 users A,B,C and D and 4 call queues. Q1, Q2, Q3, Q4
A - missed calls go to Q1. If nobody in Q1 answers go to vm
B - missed calls go to Q2. If nobody in Q2 answers go to vm
C - missed calls go to Q3. If nobody in Q3 answers go to vm
D - missed calls go to Q4. If nobody in Q4 answers go to vm
No loop. Everybody is covered.
Voicemail can be configured to be received by the original called party or by multiple people.
Bonus points
if a user misses a call - whoever covers them will know that the call was addressed for somebody else, because it will be coming through the queue and not as a direct forward.