A person may be a member of a group, and then may have roles in that group. So, see the example below:
Example data entry page tab
-
| Group ___________________
| Join date __ / __ / ____
| Leave date __ / __ / ____
|
| Roles (optional to add)
| | Role: ___________________
| | Start Date __ / __ / ____
| | End Date __ / __ / ____
| | Officiator: ___________________
| -
| | Role: ___________________
| | Start Date __ / __ / ____
| | End Date __ / __ / ____
| | Officiator: ___________________
| -
| ...
-
| Group ___________________
| Join date __ / __ / ____
| Leave date __ / __ / ____
|
| Roles (optional to add)
| | Role: ___________________
| | Start Date __ / __ / ____
| | End Date __ / __ / ____
| | Officiator: ___________________
| -
| | Role: ___________________
| | Start Date __ / __ / ____
| | End Date __ / __ / ____
| | Officiator: ___________________
| -
| ...
-
...