Ring plans work like this. The highest active ring plan takes control until its time is up.Then it falls back to the next . So when ring plans 2-6 are not active,the system falls back to ring plan 1 which is always active 00:00- 23:59 usually night or closed mode. So you can do it but you would have to make sure that the other groups do what you want while the 5005 group is "open" 07:00-14:00 and Sunday.
That will involve tweeking the voicemail so the closed call groups are handled the way you want while the 5005 group is active on those off hours. Trunk/station forwarding etc to get them to the closed messaging while the other group is active .

If you don't have programming experience this can get a little complicated and would be well worth the cost of a tech visit to set it up.