Is it possible to assign multiple users to a task, or create a subgroup of employees and assign that group to a task?

Real life example:

We are going to start a housing renovation project on which multiple employees will work. During day one we organize a get-together on location to take a look at the work that will have to be done. I want to create a "Project Initiation on Location" task and assign all people involved to this task.

Unfortunately this is not possible.

Possible solution:

Ability to create project-teams and assign different people and sub-teams to those teams. I could create a few teams with different people, then create one global team which consists of all the sub-teams and then assign this task to the global project team. Any member of the team then should be able to mark his/her part as completed.

I don't want to create tasks for every individual team member.