Creating User Groups
For managing the team, you can setup different teams in Groups section and setup different permission for designated group. Such as Sales Team Group to manage sales channels (Sales Whatsapp and Facebook page channel) and then create the schedule booking team group for arranging the booking for user.
Setup Group Permission
You can setup different permission for each group by system section, channels, calendar and channel's customer
Assign user to the group to grant the same permission
Then, you can also create the Sales Management team for managing the user account for sales. After creating the Group and set up the group permission. You can assign users into the group during creating user.
Some of the import settings: