Multiple assignees with an automation to a single column

It would be great if it could be possible to assign multiple person using an automation to a single person column.

I see that it is possible to create and assign a whole team with an automation, but it is not possible to add guests to a team. ( I also voted for this feature to add guest to team in the community). So, as it is not possible, I would like to see if it could be possible to assign multiple members and guest to a single person column using an automation.